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Class 10 Science Chapter 10 Light Reflection And Refraction Quiz 9 (13 MCQs)

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1. The refractive index of glass for light going from air to glass is 3/2. The refractive index for light going from glass to air will be:(a) 1/3 (b) 4/5 (c) 4/6 (d) 5/2
2. A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:(a) 0$^\circ$ (b) 45$^\circ$ (c) 90$^\circ$ (d) 120$^\circ$
3. Virtual images formed by a convex mirror are always .....
4. A concave mirror gives virtual, refract and enlarged image of the object but image of smaller size than the size of the object is
5. To get real magnified image in convex lens, the object position is
6. What is the cause of refraction of light?
7. The Laws of Reflection are applicable to which of the following?
8. The angle between an incident ray and the plane mirror is 30$^\circ$. The total angle between the incident ray and reflected ray will be:(a) 30$^\circ$ (b) 60$^\circ$ (c) 90$^\circ$ (d) 120$^\circ$
9. Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/ 3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?(use for concave mirror)
10. A convex lens has a focal length of 10cm. What is its power?
11. What kind of image can be obtained on a screen
12. The image formed by a plane mirror is:(a) virtual, behind the mirror and enlarged. (b) virtual, behind the mirror and of the same size as the object. (c) real, at the surface of the mirror and enlarged. (d) real, behind the mirror and of the same size as the object.
13. A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?
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