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Light waves coming from air are reflecte...

Light waves coming from air are reflected at the surface of separation of air and glass. The phase change of the reflected wave is equal to

A

zero

B

`(pi)/(2)`

C

`pi`

D

`2pi`

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The correct Answer is:
A
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CHHAYA PUBLICATION-REFLECTION OF LIGHT-EXERICISE (MCQ)
  1. A small object is situated at a distance of 10 cm in front of a plane ...

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  2. The reflected rays at a plane mirror can form a real image

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  3. Light waves coming from air are reflected at the surface of separation...

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  4. In the dial of a clock there are marks instead of numbers. The reading...

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  5. A man of height 6 ft wants to see his full image in a plane mirror. Th...

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  6. The focal lentht of a concave mirror is

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  7. Which mirror is to be used to obtain a parallel beam of light from a s...

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  8. A concave mirror has radius of curvature r and focal length f . The co...

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  9. A concave mirror has radius of curvature r and focal length f. An obje...

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  10. A concave mirror has radius of curvature r and focal length f. An obje...

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  11. A concave mirror has radius of curvature r and focal length f. An obje...

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  12. A mirror forms a real image of unit magnification. Nature of the mirro...

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  13. If an object is placed at a distance of 40 cm from a concave mirror of...

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  14. A person standing in fornt of a mirror finds his image larger than him...

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  15. A convex mirror has focal length f. An object is placed at a distance ...

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  16. An object is placed at a distance of 20 cm from a concave mirror of fo...

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  17. An radius of curvature of a convex mirror is 40 cm and the size of th...

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  18. A concave mirror of focal length f (in air) is immersed in water (mu ...

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  19. A concave mirror of focal length 15 cm forms an image twice the size o...

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  20. The image of a point object placed at 10 cm from a concave mirror, is...

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