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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 ENGLISH-RAY OPTICS-Checkpoint 9.3
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  2. Absolute refractive indices of glass and water are 3//2 and 4//3. The ...

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  3. The refractive index of glass is 1.5 for light waves of lamda=6000 Ã… ...

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  4. A ray of light strikes a glass plate at an angle of 60^(@). If the ref...

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  5. The refractive index of glass with respect to air is 3/2 and the refra...

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  6. How does refractive (µ) of a material vary with respect to wavelength ...

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  7. ""(i)u(j) represents refractive index when a light ray goes from mediu...

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  8. µ(1) and µ(2) are the refractive index of two mediums and v(1) and v(2...

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  9. When light is refracted into a medium

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  10. A spot is placed on the bottom of a slab made of transperent material ...

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  11. An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed fro...

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  12. An under water swimmer is at a depth of 12 m below the surface of wate...

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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 immiscibles transparent liquids with erefractive indices 3/2,4/3...

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  15. A glass-slab is immersed in water. What will be the crirtical angle fo...

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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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  19. A ray of light travelling in a transparent medium falls on a surface s...

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  20. A glass slab has a critical angle of 30^(@) when placed in air. What w...

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