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A watch glass has uniform thickness, and...

A watch glass has uniform thickness, and the average radius of curvature of its two surfaces is much larger than its thickness. It is placed in the path of a beam of parallel light. The beam will

A

converge slightly

B

diverge slightly

C

be completely unaffected

D

converge or diverge slightly depending on whether the beam is incident from the concave, or the convex side

Text Solution

Verified by Experts

The correct Answer is:
B
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FIITJEE-OPTICS-ASSIGNMENT PROBLEMS (OBJECTIVE)(level 2)
  1. A point object is placed at 30 cm from a convex glass lens (mu(g) = (3...

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  2. For which of the pairs of u and f for a-mirror image is smaller in siz...

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  3. A convex lens made of glass (mu(g)= 3/2) has focal length f in air. Th...

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  4. A converging lens is used to form an image on a screen. When the upper...

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  5. In an interference arrangement similar to young's double slit experime...

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  6. A brid flies down vertically towards a water surface. To a fish inside...

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  7. A point object P moves towards a convex mirror with a constant speed V...

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  8. T is a point at the bottom of a tank filled with water, as shwon. The ...

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  9. A ray of light travels from a medium of refractive index mu to air. It...

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  10. In the previous question

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  11. A point object is placed at the centre of a glass sphere of radius 6cm...

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  12. A tank of height 33.25 cm is completely filled with liquid (mu = 1.33)...

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

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  14. A solid transparent sphere made of glass (R.I.=mu gt 1) has a small, o...

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  15. A watch glass has uniform thickness, and the average radius of curvatu...

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  16. A thin concavo-convex lens has two surfaces of radii of curvature R an...

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  17. In Young's double slit experiment intensity at a point is ((1)/(4)) of...

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  18. In a two slit experiment with white light, a white fringe is observed ...

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  19. The ratio of intensities of two waves are given by 4:1. The ratio of t...

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  20. In the Young's double slit experiment with sodium light, the slits are...

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