Unit 12 Array Physics 10th Class Punjab MCQ Tests
10th Class Physics Unit 12 MCQ Tests
Unit 12 of 10th Class Physics has 66 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 66
Total Marks: 66
Time: 70 Mins
Total Questions: 66
Total Marks: 66
Time: 70 Mins
70Min : 00 Sec Remaining
Question # 1
What is the relation between the radius of curvature R and focal length f of a concave mirror?
Question # 2
Lens which is thick at center and thin at edges
Question # 3
In photograph enlarger, object is placed
Question # 4
The focal length of a concave lens is
Question # 5
Which part of the camera is analogous to the retina in the human eye:
Question # 6
What should be the position of slide with respect to projection lens in a slide projector?
Question # 7
What will be the critical angle of a medium of refractive index 1.5 if the light from it strikes the boundary between air and medium, and is reflected back into the medium? The refractive index of air is 1.
Question # 8
What will be the size of image if an object of 20 cm height is placed 30 cm away from a concave mirror of focal length 18 cm.
Question # 9
The speed of light in air then what will be the speed of light in glycerin of refractive index 1.47?
Question # 10
Which of the following is located behind the convex mirror?
Question # 11
For security purposes, which mirrors are used in large shopping centres ?
Question # 12
For which position of object, a convex lens acts as a magnifier (simple microscope)?
Question # 13
What is the magnification of a convex lens of focal length 10 cm used as a magnifier?
Question # 14
A wave reflects from a smooth surface, such that all of the parts of wave are reflected. The angle of incident wave with the normal to the surface is 30 o . What is the angle of reflected wave with the normal?
Question # 15
If waves are reflected back in first medium after falling on second medium, then which of the following statements will be true?
Question # 16
A concave mirror of focal length 10 cm forms image of an object. The image is 3 times in size to that of the object. What should be the object distance?
Question # 17
Condition in which image is formed behind the retina is called
Question # 18
The radius of curvature of a hollow reflecting sphere is 20 cm. What will be the focal length of a concave mirror formed from this sphere?
Question # 19
Question # 20
Which of the following lenses diverges light from a single point?
Question # 21
Ratio of sin(i) of angle of incidence to sin(r) of angle of refraction is
Question # 22
Calculate the focal length of a convex lens if it forms a virtual image of object, which is 20 cm away from the lens. The distance of object is 12 cm from the lens.
Question # 23
If angle of incidence of light while leaving a denser object is zero, what will happen to the light?
Question # 24
Which of the following mirrors has negative focal length?
Question # 25
The speed of light in a certain glass is 1.91 x 108 m/s. What is the refractive index of the glass?
Question # 26
Height of an object is 32 cm. The mirror forms an image of height 8 cm, which is 20 cm away from the mirror. What is the focal length of the mirror?
Question # 27
For a concave mirror, focus is
Question # 28
Radius of curvature of a concave mirror is always _____ to the mirror.
Question # 29
In regular reflection, the angle of incident ray is equal to the angle of reflected ray. How irregular reflection differs from regular reflection?
Question # 30
Quantity which does not changes during refraction is
Question # 31
Direction of free test charge will be
Question # 32
A magnified, inverted image is located at a distance of 32 cm from a concave mirror with a focal length of 12 cm. What will be the object distance. Whether the image will be real or virtual?
Question # 33
Which of the lenses of compound microscope has larger focal length, comparatively?
Question # 34
If the light coming parallel to the principal axis of a lens is converged towards the principal axis after passing through the lens, then what is the type of lens?
Question # 35
An object is placed between principle focus and optical center of a convex lens. Which of the following quantities has negative sign?
Question # 36
What type of mirror makes objects appear smaller, but the area of view larger?
Question # 37
The resolving power of a telescope depends on which of the following factors?
Question # 38
What is the principle of regular reflection of a wave from smooth surfaces?
Question # 39
Which of the following is the main condition of reflection?
Question # 40
What causes a change in speed of wave during refraction?
Question # 41
A _____ uses 2 convex lenses to magnify an object and make a smaller object larger.
Question # 42
Short sightedness can be corrected if
Question # 43
A convex mirror will always produce an image that is _____.
Question # 44
Which of the following lenses has focal length with negative sign?
Question # 45
An object is placed 10 cm away from a convex lens such that the image formed at the least distance of distinct vision by the lens, is virtual, larger in size and erect. What will be the magnification of the lens?
Question # 46
Which of the following is the reason of twinkling of stars?
Question # 47
What happens to the speed of light as it enters from air into glass?
Question # 48
Suppose you are standing 60 cm away from a plane mirror. What will be the distance of your image from the mirror?
Question # 49
The refractive index of a liquid is 4/3. What is the critical angle for this liquid?
Question # 50
Which of the following lenses converges light from a single point?
Question # 51
What is the focal length of a convex lens used as a magnifier of magnification 3?
Question # 52
Which of following lenses diverges light from a single point?
Question # 53
An object is placed at 20 cm form a convex lens of focal length 15 cm. What will be the location of image?
Question # 54
Which of the following sets of angles represents the angles of a totally internal reflecting prism?
Question # 55
An object is placed between F and 2F of a concave lens. Which of the following quantities will be negative?
Question # 56
If the value of refractive index of a medium is greater, then what will happen to the bending of light during refraction?
Question # 57
We have a right angled isosceles prism and its refractive index is 1.5. If we incident a ray normally on one of the two perpendicular surfaces, which of the following phenomena will take place?
Question # 58
Which of the following pieces of photograph enlarger gathers and focuses light on specimen being viewed?
Question # 59
Which of the following statements is true about light refraction?
Question # 60
Which of the following factors helps in increasing the resolving power of a compound microscope?
Question # 61
The object distance is at the distance of 2 cm from the objective and the first image is at the distance of 10 cm from the objective. The focal length of eyepiece is 5 cm. What is the magnification of compound microscope?
Question # 62
What will be the nature of image formed by a compound microscope?
Question # 63
What is the purpose of objective lens in a compound microscope?
Question # 64
An object is placed between the center of curvature and focus of a concave mirror. What is the nature and size of image?
Question # 65
If a concave lens have focal length of 15 cm and image distance is 10 cm then object distance is
Question # 66
An object is placed beyond the principal focus of a concave lens. What will be the nature of the image formed by the lens?
Total Questions
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Question # 1
What is the relation between the radius of curvature R and focal length f of a concave mirror?
Question # 2
Lens which is thick at center and thin at edges
Question # 3
In photograph enlarger, object is placed
Question # 4
The focal length of a concave lens is
Question # 5
Which part of the camera is analogous to the retina in the human eye:
Question # 6
What should be the position of slide with respect to projection lens in a slide projector?
Question # 7
What will be the critical angle of a medium of refractive index 1.5 if the light from it strikes the boundary between air and medium, and is reflected back into the medium? The refractive index of air is 1.
Question # 8
What will be the size of image if an object of 20 cm height is placed 30 cm away from a concave mirror of focal length 18 cm.
Question # 9
The speed of light in air then what will be the speed of light in glycerin of refractive index 1.47?
Question # 10
Which of the following is located behind the convex mirror?
Question # 11
For security purposes, which mirrors are used in large shopping centres ?
Question # 12
For which position of object, a convex lens acts as a magnifier (simple microscope)?
Question # 13
What is the magnification of a convex lens of focal length 10 cm used as a magnifier?
Question # 14
A wave reflects from a smooth surface, such that all of the parts of wave are reflected. The angle of incident wave with the normal to the surface is 30 o . What is the angle of reflected wave with the normal?
Question # 15
If waves are reflected back in first medium after falling on second medium, then which of the following statements will be true?
Question # 16
A concave mirror of focal length 10 cm forms image of an object. The image is 3 times in size to that of the object. What should be the object distance?
Question # 17
Condition in which image is formed behind the retina is called
Question # 18
The radius of curvature of a hollow reflecting sphere is 20 cm. What will be the focal length of a concave mirror formed from this sphere?
Question # 19
Question # 20
Which of the following lenses diverges light from a single point?
Question # 21
Ratio of sin(i) of angle of incidence to sin(r) of angle of refraction is
Question # 22
Calculate the focal length of a convex lens if it forms a virtual image of object, which is 20 cm away from the lens. The distance of object is 12 cm from the lens.
Question # 23
If angle of incidence of light while leaving a denser object is zero, what will happen to the light?
Question # 24
Which of the following mirrors has negative focal length?
Question # 25
The speed of light in a certain glass is 1.91 x 108 m/s. What is the refractive index of the glass?
Question # 26
Height of an object is 32 cm. The mirror forms an image of height 8 cm, which is 20 cm away from the mirror. What is the focal length of the mirror?
Question # 27
For a concave mirror, focus is
Question # 28
Radius of curvature of a concave mirror is always _____ to the mirror.
Question # 29
In regular reflection, the angle of incident ray is equal to the angle of reflected ray. How irregular reflection differs from regular reflection?
Question # 30
Quantity which does not changes during refraction is
Question # 31
Direction of free test charge will be
Question # 32
A magnified, inverted image is located at a distance of 32 cm from a concave mirror with a focal length of 12 cm. What will be the object distance. Whether the image will be real or virtual?
Question # 33
Which of the lenses of compound microscope has larger focal length, comparatively?
Question # 34
If the light coming parallel to the principal axis of a lens is converged towards the principal axis after passing through the lens, then what is the type of lens?
Question # 35
An object is placed between principle focus and optical center of a convex lens. Which of the following quantities has negative sign?
Question # 36
What type of mirror makes objects appear smaller, but the area of view larger?
Question # 37
The resolving power of a telescope depends on which of the following factors?
Question # 38
What is the principle of regular reflection of a wave from smooth surfaces?
Question # 39
Which of the following is the main condition of reflection?
Question # 40
What causes a change in speed of wave during refraction?
Question # 41
A _____ uses 2 convex lenses to magnify an object and make a smaller object larger.
Question # 42
Short sightedness can be corrected if
Question # 43
A convex mirror will always produce an image that is _____.
Question # 44
Which of the following lenses has focal length with negative sign?
Question # 45
An object is placed 10 cm away from a convex lens such that the image formed at the least distance of distinct vision by the lens, is virtual, larger in size and erect. What will be the magnification of the lens?
Question # 46
Which of the following is the reason of twinkling of stars?
Question # 47
What happens to the speed of light as it enters from air into glass?
Question # 48
Suppose you are standing 60 cm away from a plane mirror. What will be the distance of your image from the mirror?
Question # 49
The refractive index of a liquid is 4/3. What is the critical angle for this liquid?
Question # 50
Which of the following lenses converges light from a single point?
Question # 51
What is the focal length of a convex lens used as a magnifier of magnification 3?
Question # 52
Which of following lenses diverges light from a single point?
Question # 53
An object is placed at 20 cm form a convex lens of focal length 15 cm. What will be the location of image?
Question # 54
Which of the following sets of angles represents the angles of a totally internal reflecting prism?
Question # 55
An object is placed between F and 2F of a concave lens. Which of the following quantities will be negative?
Question # 56
If the value of refractive index of a medium is greater, then what will happen to the bending of light during refraction?
Question # 57
We have a right angled isosceles prism and its refractive index is 1.5. If we incident a ray normally on one of the two perpendicular surfaces, which of the following phenomena will take place?
Question # 58
Which of the following pieces of photograph enlarger gathers and focuses light on specimen being viewed?
Question # 59
Which of the following statements is true about light refraction?
Question # 60
Which of the following factors helps in increasing the resolving power of a compound microscope?
Question # 61
The object distance is at the distance of 2 cm from the objective and the first image is at the distance of 10 cm from the objective. The focal length of eyepiece is 5 cm. What is the magnification of compound microscope?
Question # 62
What will be the nature of image formed by a compound microscope?
Question # 63
What is the purpose of objective lens in a compound microscope?
Question # 64
An object is placed between the center of curvature and focus of a concave mirror. What is the nature and size of image?
Question # 65
If a concave lens have focal length of 15 cm and image distance is 10 cm then object distance is
Question # 66
An object is placed beyond the principal focus of a concave lens. What will be the nature of the image formed by the lens?
Total Questions
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566
Physics MCQ Test by Topics
- +12.1 REFLECTION OF LIGHT
- +12.2 SPHERICAL MIRRORS
- +12.2 Reflection of Light by Spherical Mirrors
- +12.3 IMAGE LOCATION BY SPHERICAL MIRROR FORMULA
- +12.4 REFRACTION OF LIGHT
- +12.4 LAWS OF REFRACTION
- +12.4 Speed of light in a medium
- +12.4 Refractive Index
- +12.5 TOTAL INTERNAL REFLECTION
- +12.6 APPLICATIONS OF TOTAL INTERNAL REFLECTION
- +12.7 REFRACTION THROUGH PRISM
- +12.8 LENSES
- +12.9 IMAGE FORMATION BY LENSES
- +12.10 IMAGE LOCATION BY LENS EQUATION
- +12.11 APPLICATIONS OF LENSES
- +12.12 SIMPLE MICROSCOPE
- +12.13 COMPOUND MICROSCOPE
- +12.14 TELESCOPE
- +12.15 THE HUMAN EYE
- +12.16 DEFECTS OF VISION
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Updated on: 17-10-2026
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