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A tank of height 33.25 cm is completely ...

A tank of height 33.25 cm is completely filled with liquid (`mu` = 1.33). An object is placed at the bottom of tank on the axis of concave mirror as shown in the figure. Image of the object is formed 25 cm below the surface of the liquid, then focal length of the mirror is

A

10 cm

B

15 cm

C

20cm

D

25 cm

Text Solution

Verified by Experts

The correct Answer is:
C
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FIITJEE-OPTICS-ASSIGNMENT PROBLEMS (OBJECTIVE)(level 2)
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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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