Fluid Mechanics Viscosity Question 269

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

Options:

A) $ \ell $ decreases and h increases

B) $ \ell $ increases and h decreases

C) Both $ \ell $ and h increase

D) Both $ \ell $ and h decrease

Show Answer

Answer:

Correct Answer: D

Solution:

As the block moves up with the fall of coil,$ 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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