Water level in the tank is decreasing At a constant rate of 1 $c m / s . A$ small metal sphere is moving downwards with a constant velocity 5 $c m / s e c$ . Base of the tank is concave mirror of radius 40 $c m .$ Find the velocity of the image seen.

4 c m / s e c

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5 c m / s e c

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2 c m / s e c

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None of these

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Solution

The correct option is A $4 c m / s e c$
Option A is correct

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Q. Question 18
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Water level in the tank is decreasing At a constant rate of 1cm/s.A small metal sphere is moving downwards with a constant velocity 5cm/sec . Base of the tank is concave mirror of radius 40cm. Find the velocity of the image seen.

The correct option is A 4 cm/secOption A is correct

Water level in the tank is decreasing At a constant rate of 1 $c m / s . A$ small metal sphere is moving downwards with a constant velocity 5 $c m / s e c$ . Base of the tank is concave mirror of radius 40 $c m .$ Find the velocity of the image seen.

The correct option is A $4 c m / s e c$
Option A is correct