set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

A boy carries a fish in one hand and a bucket of water in the other hand. If he places the fish in the bucket, the weight now carried by him.

a) is more than before

b) is less than before

c) is the same as before

d) depends upon his speed

Question : 2

Water is flowing through a horizontal pipe in streamline flow. At the narrowest part of the pipe

a) Pressure is maximum and velocity is minimum

b) Velocity is maximum and pressure is minimum

c) Both the pressure and velocity are maximum

d) Both the velocity and pressure are minimum

Question : 3

While lifting a bucket of water from a well, we feel that the bucket

a) Becomes lighter above the surface of water

b) Loses stability on coming out of the water

c) Becomes heavier above the surface of water

d) Has gained mass on coming out of water

Question : 4

A drop of oil is placed on the surface of water. Which of the following statements is correct?

a) It will spread as a thin layer

b) It will remain on it as a sphere

c) It will partly be a spherical droplet and partly a thin film

d) It will float as a distorted drop on the water surface

Question : 5

Pressure at a point inside a liquid does not depend on

a) the nature of the liquid

b) the depth of the point below the surface of the liquid

c) the acceleration due to gravity at that point

d) the shape of the containing vessel

Question : 6

Consider the following statement. If there were no phenomenon of capillarity.

1. It would be difficult to use a kerosene lamp then.
2. One would not be able to use a straw to consume a soft drink.
3. The blotting paper would fail to function.
4. The big trees that we see around would not have grown on the Earth.

a) Only 1, 3 and 4

b) Only 2 and 4

c) Only 1, 2 and 3

d) Only 1, 2, 3 and 4