Chapter 10 Light Reflection and Refraction – HI MCQ!

Large number of thin stripes of black paint are made on the surface of a convex lens of focal length 20 cm to catch the image of a white horse. The image will be?

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An object at a distance of + 15 cm is slowly moved towards the pole of a convex mirror. The image will get?

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A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is?

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When a ray of light is incident normally, the angle of incidence is?

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choose the statement which is/ are incorrect?

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Greater the difference in the speed of light in the two media, greater will be the amount of refraction or bending of light.
The refraction of light take place at the boundary between the two media.
The bending of light when it goes from one medium to another obliquely is called refraction of light.
The speed of light in air is 3 x 10 to power 18 m/s whereas that in glass is 2 x 10 to power 8 m/s.

A Concave Mirror Produces Magnification Of +4. The Object Is Place(d)?

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If a man’s face is 25 cm in front of concave shaving mirror producing erect image 1.5 times the size of face, focal length of the mirror would be?

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An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is?

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Refraction of light by the earth’s atmosphere due to variation in air density is called?

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Mirror used for focusing light is?

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