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Two plane mirror M(1) "and" M(2) are inc...

Two plane mirror `M_(1) "and" M_(2)` are inclined to each other at `70^(@)`. A ray incident on the mirror `M_(1)` at an angle `theta` fallls on `M_(2)` and is then reflected parallel to `M_(1)` for

A

`theta= 45^(@)`

B

`theta= 50^(@)`

C

`theta= 55^(@)`

D

`theta=60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B

`90^(@) - theta = 180^(@)- 70^(@)- 70^(@) implies theta = - 50^(@)`
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ALLEN -GEOMETRICAL OPTICS-EXERCISE- 01
  1. Two plane mirror M(1) "and" M(2) are inclined to each other at 70^(@)....

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  2. A mirror is inclined at an angle of theta with the horizontal. If a ra...

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  3. Two mirror labelled L(1) for left mirror and L(2) for right mirror (L(...

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  4. A bird is flying with a velocity v between two long vertical mirrors m...

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  5. A plane mirror is moving with velocity 4 (hat i) + 4 (hat j) + 8 (hat ...

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  6. In the figure shown, how many images of the star will an observer at O...

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  7. The distance of an object from a spherical mirror is equal to the foca...

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  8. A concave mirror of focal length 20 cm is cut into two parts from the ...

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  9. Radius of curvature of each mirror is R. 'O' is object. Consider first...

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  10. A convex mirror of focal length 'f' is placed at the origin with its r...

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  11. The x-z plane separates two media A and B of refractive indices mu(1)=...

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  12. A ray of light travelling in a medium of refractive index mu is incide...

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  13. Consider the situation shown in figure. Water (mu(W) = (4)/(3)) is f...

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  14. A plane mirror is placed at the bottom of the tank containing a liquid...

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  15. When a pin is moved along the principal axis of a small concave mirror...

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  16. A ray R(1) is incidnet on the plane surface of the glass slab (kept in...

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  17. Refractive index of a glass cube is sqrt(2). A ray of light is inciden...

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  18. A ray of light is travelling from a denser medium to rarer medium. For...

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  19. The distance of final image from AB as observed by observer is P is

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  20. What is the least radius through which an optical fiber of core diamet...

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