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A ray of light 10^(-9) second to cross a...

A ray of light `10^(-9)` second to cross a glass slab of refractive index 1.5. The thickness of the slab will be

A

0.1 m

B

0.2 m

C

0.3 m

D

0.4 m

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The correct Answer is:
B
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AAKASH INSTITUTE-RAY OPTICS AND OPTICAL INSTRUMENTS-EXERCISE
  1. A coverging beam of light is incident on the concave mirror. Then the ...

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  2. An object is at 20 cm from a concave mirror of focal length 10 cm, the...

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  3. A ray of light 10^(-9) second to cross a glass slab of refractive inde...

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  4. The time taken by a monochromatic light to travel a certain distance i...

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  5. A monochromatic light passes through a glass slab (mu = (3)/(2)) of th...

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  6. A beam of light is partially reflected and partially refracted from a ...

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  7. A small object is placed 20 cm in front of a block of glass 10 cm thic...

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  8. A glass slab of thickness 4 cm contains the same number of waves as 5 ...

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  9. The velocities of light in two different media are 2*10^8m/s and 2.5 *...

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  10. Light takes t(1) second to travel a distance x cm in vacuum and the sa...

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  11. A fish is a little away below the surface of a lake. If the critical a...

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  12. A parallel beam of monochromatic light falls on a combination of a con...

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  13. The magnifications produced by a convex lens for two different positio...

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  14. Three lenses in contact have a combined focal length of 12 cm. When th...

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  15. The radii of curvatures of a convex lens are 0.04 m and 0.04m. Its ref...

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  16. A convex glass lens (mu(g) = 1.5) has a focal length of 8 cm when plac...

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  17. A convex mirror forms an image one-fourth the size of the object. If o...

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  18. A travelling microscope is focussed on to a scratch on the bottom of a...

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  19. While a moving picture is being screened, a boy introduced a glass sla...

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  20. For a plano convex lens, the radius of curvature of convex surface is ...

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