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Class 10 Science Chapter 10 Light Reflection And Refraction Quiz 6 (25 MCQs)

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1. Recently, In A Science Class Test, You Are Asked A Question Where You Have To Say Whether The Statements Are Correct Or Not?
2. Converging lens
3. What particles make up light?
4. The image formed by concave mirror is real, inverted and of the same size as that of the object. The position of object should be
5. Image formed by reflection from a plane mirror is
6. The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be-
7. You are given three media A, B and C of refractive index 1.33, 1.65 and 1.46. The medium in which the light will travel fastest is
8. An object is placed at a distance of 30 cm from a concave lens of focal length 30cm. Use lens formula to determine the distance of the image from the lens?
9. Assertion:Pupil is black in color.Reason:Pupil is black in color as no light is reflected in it.
10. A full length image of a distant tall building can definitely beseen by using
11. According to laws of reflection of light-
12. An object is placed at a distance of 10cm from a convex mirror of focal length 15cm.find the position and nature of the image
13. Light has the highest velocity in which medium?flint glass n=1.70barium glass n=1.60crown glass n=1.523water n=1.33diamond n=2.45
14. A convex and a concave lens of equal focal length behaves as a regular glass slab receiving light normally.
15. Image formed by a convex spherical mirror is?
16. A medium in which light travels comparatively faster than the other medium is called an
17. How does the angle of refraction change with the angle of incidence?
18. A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is:
19. The power of a lens having focal length 50 cm is-
20. A concave mirror produces three times magnified image on a screen. If the object is placed 20 cm in front of the mirror, how far is the screen from the object?
21. A concave mirror produces a magnification of + 4. The object is placed:(a) at the focus (b) between focus and centre of curvature (c) between focus and pole (d) beyond the centre of curvatur
22. Define refractive index.
23. Which mirror convex or concave has larger field of view?
24. Two lenses of power +2.5 D and-3.75 D are combined to form a compound lens. Its focal length in cm will be
25. The unit of power of lens is
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