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A spot is placed on the bottom of a slab...

A spot is placed on the bottom of a slab made of transperent material of refractive index 1.5. The spot is viewed vertically from the top when it seems to be raised by 2 cm. Then, the height of the slab is

A

10 cm

B

8 cm

C

6 cm

D

4 cm

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) We have, `d_(app)=d/µ`
or `(d-2)=d/1.5`
`therefore` d=6 cm
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DC PANDEY-RAY OPTICS-Checkpoint 9.3
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  9. When light is refracted into a medium

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  13. A vessel of depth 2d cm is half filled with a liquid of refractive ind...

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  14. Three immiscible transparent liquids with refractive indices 3//2,4//3...

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  15. A glass-slab is immersed in water. What will be the critical angle for...

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  16. The wavelength of light in two liquids ‘ x ' and ‘ y ' is 3500 Å and ...

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  17. White light is incident on the interface of glass and air as shown in ...

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  18. Calculate the speed of light in a medium whose critical angle is 30^(@...

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