A wooden block, with a coin placed on its top, floats in water as shown in figure. The distance l and h are shown here. After some time the coin falls into water. Then

Options

A. l decreases and h increases
B. l increases and h decreases
C. both l and h increases
D. both l and h decrease

Answer

D

Explanation

When the coin falls, the block moves upwards, hence l decreases , h will also decrease because when the coin is the water it will displace equal volume of water of water, whereas when it is on the block an equal weight of water is displaced.