General Science Class 9 MCQS

The springs in brakes and clutches are used :

1. To restore original position
2. To measure forces
3. To absorb shocks
4. To absorb strain energy

Which of the following material is more elastic?

1. Rubber
2. Glass
3. Steel
4. Wood

If a spring stretches easily then its spring constant has :

1. Large value
2. Small value
3. Constant Value
4. Both (a) and (b)

What is the unit for the spring constant?

1. Nm
2. Nm^-2
3. Nm^-1
4. Nm^2

Which of the following is not a unit of pressure?

1. Pascal
2. Bar
3. Atmosphere
4. Newton

The motion of a falling ball towards Earth is due to the :

1. Weightlessness
2. Gravitational force
3. Acceleration due to gravity
4. Both 'a' and 'b’

Newton's law of gravitation holds between every two objects on the :

1. On Earth
2. On Jupiter
3. On Moon
4. On Universe

Numerical value of G is :

1. G = 6.673 10^-11 Nm^2 kg^-2
2. G = 6.673 10^11 Nm^2 kg^-2
3. G = 6.763 10^-11 Nm^2 kg^-2
4. G = 6.763 10^11 Nm^2 kg^-2

Gravitational field of Earth is directed :

1. Towards the Earth
2. Towards the Sun
3. Towards the Moon
4. Away from Earth

Who was the first scientist who gave the concept of gravitation?

1. Einstein
2. Newton
3. Faraday
4. Maxwell