RSS Physics Quiz

The density of a substance is best defined as:

• Mass per unit length

• Mass per unit area

• Mass per unit volume

• Volume per unit mass

A body weighing 50 N on Earth is taken to the Moon, where the acceleration due to gravity is 1/6 that of Earth. Its weight on the Moon is:

• 300 N

• 50 N

• 8.3 N

• 300 N

The pressure exerted by a column of liquid depends on:

• Density of liquid, height of column, acceleration due to gravity

• Mass of liquid, speed of liquid, area of base

• Volume of liquid, density of liquid, shape of container

• Height of column, volume of liquid, temperature

When a stone is thrown vertically upwards, at the highest point:

• Velocity = 0, acceleration = 0

• Velocity = 0, acceleration = g (downwards)

• Velocity = g, acceleration = 0

• Velocity and acceleration are both upwards

The work done by a force of 20 N acting perpendicular to the displacement of 5 m is:

• 100 J

• 0 J

• 20 J

• 25 J

The principle of conservation of energy states that:

• Energy can be created but not destroyed

• Energy can be neither created nor destroyed, only transformed

• Energy is always lost to the surroundings

• Energy increases with time

Which of the following quantities is a vector?

• Speed

• Temperature

• Displacement

• Time

If the velocity of a wave is 300 m/s and its frequency is 150 Hz, the wavelength is:

• 0.5 m

• 2 m

• 45000 m

• 150 m

The time period of a simple pendulum depends on:

• Mass of the bob and length of string

• Length of string and acceleration due to gravity

• Mass of the bob and acceleration due to gravity

• Both mass and length

The electric current is defined as:

• Rate of flow of electrons

• Charge per unit time

• Electric force per unit charge

• Voltage divided by resistance