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Consider the situation shown in figure. ...

Consider the situation shown in figure. Water `(mu_(W) = (4)/(3))` is filled in a breaker upto a height of 10 cm . A plane mirror fixed at a height of 5 cm from the surface of water. Distance of image from the mirror after reflection from it of an object O at the bottom of the beaker is

A

15 cm

B

12.5 cm

C

7.5 cm

D

10 cm

Text Solution

Verified by Experts

The correct Answer is:
B
Initially observer is mirror for image formation of object O. As O is kept at the bottom , then it sees somewhat above the bottom.
`therefore` Distance = `5 + (10)/(mu) = 5 + (10xx3)/(4)`
= 12.5 cm (in front )
Hence image from the mirror after reflection is also at `12.5` cm,
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ALLEN -GEOMETRICAL OPTICS-EXERCISE- 01
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  2. A ray of light travelling in a medium of refractive index mu is incide...

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

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

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

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

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

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

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

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

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  11. A ray of light from a denser medium strike a rarer medium at an angle ...

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  12. An object is immersed in a fluid. In order that the object becomes inv...

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  13. A ray of light is incident upon an air/water interface ( it passes fro...

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  14. A light ray is incident on a transparent sphere of index = sqrt(2) , a...

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  15. An air bubble inside water. The refractive index of water is 4/3 . At ...

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  16. A paraxial beam is incident on a glass (n=1.5) hemisphere of radius R=...

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  17. A concave spherical surface of radius of curvature 10 cm separates two...

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  18. A double convex lens, lens made of a material of refractive index mu(1...

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  19. Optic axis of a thin equiconvex lens is the x-axis. The co-rodinates o...

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  20. A converging lens of focal length 20 cm and diameter 5 cm is cut along...

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