Physics IGCSE 22-FM-23 Quiz

Which list contains two scalar quantities and two vector quantities?

• A distance, speed, time, velocity

• B force, velocity, distance, mass

• C mass, energy, temperature, momentum

• D weight, acceleration, momentum, speed

The drag force on a car increases with speed. At 20 m / s, the total drag force is 400N. The mass of the car is 1200 kg and the driving force is constant at 700N. Which statement about the acceleration of the car at 20 m / s is correct?

• A The acceleration is 0.25m / s2 but will decrease as time passes.

• B The acceleration is 0.25m / s2 but will increase as time passes.

• C The acceleration is 0.58m / s2 but will decrease as time passes.

• D The acceleration is 0.58m / s2 but will increase as time passes.

A rectangular swimming pool is 50m long and 25 m wide. It contains water at a depth of 2 m. The density of the water is 1000 kg /m3. What is the mass of the water in the pool?

• A 2.5 kg

• B 2500 kg

• C 77 000kg

• D 2 500 000kg

The momentum of a body is changed by a force acting on it for a period of time. Which action increases the change in momentum?

• A doubling the force and halving the time

• B doubling the force for the same time

• C halving both the force and the time

• D halving the force and doubling the time

A machine has a power input of 200W and a useful output energy of 1 kJ in 6 minutes. What is the efficiency of the machine?

• A 0.014%

• B 0.83%

• C 1.4%

• D 83%

What is the unit of power?

• A joule

• B newton

• C volt

• D watt

An oil tank has a base of area 2.5 m2 and is filled with oil to a depth of 1.2 m. What is the force exerted on the base of the tank due to the oil?

• A 940N

• B 2400N

• C 9400 N

• D 24 000N

A sample of gas is trapped in a rigid container. As the temperature of the gas is increased, the pressure increases. Which statement is not correct?

• A The gas molecules have greater kinetic energy.

• B The gas molecules hit the walls of the container harder.

• C The gas molecules hit the walls of the container more frequently.

• D The gas molecules move further apart.

What happens when the temperature of a liquid increases?

• A The mass of the liquid increases, making the liquid less dense.

• B The mass of the liquid increases, making the liquid more dense.

• C The volume of the liquid increases, making the liquid less dense.

• D The volume of the liquid increases, making the liquid more dense.

A bar of metal, which is a good thermal conductor, is heated at one end. What is the main method of transfer of thermal energy along the bar?

• A lattice vibration

• B movement of atoms of the metal along the bar

• C transfer by electrons

• D vibration of atoms of the metal bar