The maximum displacement of a vibrating tunning fork is its

• A. amplitude
• B. frequency
• C. period
• D. wavelength

A note produced by an instrument is distinguished from a similar note produced by another instrument by the?

• A. intensity,
• B. pitch.
• C. overtones.
• D. loudness

Which of the following is an essential physical property of the wires used for making fuses?

• A. low density
• B. high thermal conductivity
• C. low electrical resistivity
• D. low melting point

A ray of light incident at an angle \(\theta\) in a rectangular prism grazes the surface of the prism on emerging from the prism. Determine the value of the angle. [Absolute refractive index of the material of the prism is 1.5]

• A. 41.8°
• B. 48.2°
• C. 60.8°
• D. 90.0°

A 500N box rests on a horizontal floor. A constant horizontal force is exerted on the box so that it moves through 8m. If the coefficient of kinetic friction between the floor and the box is 0.22, calculate the workdone on the box

• A. 880J
• B. 440J
• C. 400J
• D. 110J

A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?

• A. 8.7N
• B. 37.0N
• C. 87.0N
• D. 13.0N

(a) What is a polarizer?

(b) With the aid of a diagram, explain how a polarizer can be used to polarize a beam of unpolarized light.

A metal rod of length 100cm is heated through 100^oC, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10^-6K^-1]

• A. 4mm
• B. 3mm
• C. 2mm
• D. 1mm

A body starts with an initial velocity of 20 m/s and moves with a uniform acceleration, a, for 15 seconds. Which of the following equations represents the distance, S, traveled?

• A. 300 + 56\(\frac{a}{2}\)
• B. 300 + \(\frac{225a}{2}\)
• C. 300 + \(\frac{225}{2a}\)
• D. 300a + \(\frac{225}{2}\)

The temperature of a piece of metal of mass 9 g is raised from 10^oC to 110^oC when it absorbs 108J of heat energy. Determine the specific heat capacity of the metal in J kg^-1K^-1

• A. 1.2
• B. 12.0
• C. 120.0
• D. 1200.0