Which of the following does NOT describe the Image formed by a plane minor?

• A. Erect
• B. Laterally inverted
• C. Same distance from mirror as object
• D. Magnified

which of the following statements about Archimedes' principle is correct? The upthrust on a body is a measure of the

• A. mass of fluid displaced
• B. weight of the body
• C. volume of the body
• D. weight of the fluid displaced

A machine of efficiency 8% is used to raise a body of mass 75kg through a vertical height of 3m in 30s. Calculate the power input. (g = 10ms^-2)

• A. 9.4W
• B. 60.0W
• C. 75.0W
• D. 93.8W

Mechanical energy can be either

• A. kinetic or electric
• B. white surface
• C. black surface
• D. electric or heat

A metal of mass 200g at a temperature of 100^oC is placed in 100g of water at 25^oC in a container of negligible heat capacity. If the final steady temperature is 30^oC, calculate the specific heat capacity of the metal. [specific heat capacity of the water is 4200 Jkg^-1 K^-1]

• A. 150 Jkg^-1K^-1
• B. 300 Jkg^-1K^-1
• C. 320 Jkg^-1K^-1
• D. 1960 Jkg^-1K^-1

A force of 5N act at a point Y on a rod XYZ as shown in the diagram below, if XY is 2m. What is the moment of the force about point X?

• A. 0Nm
• B. 3Nm
• C. 7Nm
• D. 10Nm

ln order to obtain a sound note of a high pitch from a wire stretched by a constant tension, the wire must be

• A. short and thick
• B. short and thin
• C. long and thick
• D. long and thin

The diagram below represent displacement D, versus time, t graph of a progressive wave. Deduce the frequency of the wave

• A. 20 Hz
• B. 10 Hz
• C. 5 Hz
• D. 4 Hz

A block of ice floats on water inside a container. If the block of ice gets completely melted, the level of water in the container will

• A. increase
• B. remain the same
• C. decrease
• D. first decrease and then increase

Which of the following are both mechanical and transverse?

• A. infra-red rays
• B. gamma rays
• C. sound waves
• D. water waves