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Question 1: A ray of light travels from glass into water. The refractive
index of glass is 1.5 and that of water is 1.33 If the angle of incidence in
the glass is 30°, what is the angle of refraction in water?
A) 34°
B) 20°
C) 90°
D) 24°
Explanation:
Question 2: What is the critical angle for light traveling from diamond
(refractive index= 2.42) into air (refractive index= 1)?
A) 24.41°
B) 20.5°
C) 30°
D) 90°
Explanation:
Question 3: An object is placed 15 cm in front of a convex mirror with a
focal length of 10 cm. Where is the image formed?
A) 6 cm infront of the mirror
B) 7.5 cm behind the mirror
C) 10 cm infront of the mirror
D) 6 cm behind the mirror
Explanation:
Question 4: A convex lens with a focal length of 20 cm forms a real image
that is twice the size of the object. How far is the object from the lens?
A) 30 cm
B) 13 cm
C) 16 cm
D) 20 cm
Explanation:
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Question 5: A prism has an angle of 60° and a refractive index of 1.6. What
is the minimum deviation angle for light passing through this prism?
A) 46°
B) 50°
C) 35°
D) 20°
Explanation:
Question 6: An object is placed at a distance of 40 cm from a concave mirror offocal length 15 cm. If an object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be __________ (NEET 2018)
A) 30 cm towards the mirror
B) 30 cm away from the mirror
C) 36 cm towards the mirror
D) 36 cm away from the mirror
Explanation:
Question 7: A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is roated through a small angle θ, the spot of the light is found to move through a distance y on the scale. The angle θ is __________ (NEET 2017)
A) y/x
B) x/2y
C) x/y
D) y/2x
Question 8: An air bubble in a glass slab with the refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3cm deep when viewed from the opposite face. The thickness (in cm) of the slab is __________ (NEET 2016)
A) 8
B) 10
C) 12
D) 16
Explanation: 
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