A concave mirror is placed at the bottom of an empty tank with face upwards and axis vertical- When sunlight falls normally on the mirror- it is focussed at distance of 32 cm from the mirror- If the tank filled with water -4-3 upto a height of 20 cm- then the sunlight will now get focussed at-UPSEAT 2002-A- 9 cm above water levelB- 24 cm below water levelC- 9 cm below water levelD- 16 cm above water level

The correct option is A 9 cm above water level ...

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Image Formation in Concave Mirror

A concave mir...

Question

A concave mirror is placed at the bottom of an empty tank with face upwards

and axis vertical. When sunlight falls normally on the mirror, it is

focussed at distance of 32 cm from the mirror. If the tank filled with water

upto a height of 20 cm, then the sunlight will now get focussed at

[UPSEAT 2002]

16 cm above water level

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9 cm above water level

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24 cm below water level

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9 cm below water level

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Solution

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Similar questions

A concave mirror is placed at the bottom of an empty tank with face upwards

and axis vertical. When sunlight falls normally on the mirror, it is

focussed at distance of 32 cm from the mirror. If the tank filled with water

upto a height of 20 cm, then the sunlight will now get focussed at

[UPSEAT 2002]

\frac{4}{3}

60 cm

20 cm

μ = \frac{4}{3}

μ =

33.25 c m

15 c m

25 c m

(μ = 1.33)

33.25 c m

15 c m

25 c m

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