First slide

Pressure in a fluid-mechanical properties of fluids

Question

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

Easy

A

l decreases and h increases
B

l increases and h decreases
C

Both l and h increase
D

Both l and h decrease

Solution

As the block moves up with the fall of coin, l decreases, similarly h will also decrease because when the coin is in water, it displaces water equal to its own volume only.

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