Ice of mass 10g at 5°C was completely converted to water at 0°C, calculate the quantity of heat used. [specific heat capacity of ice = 2.1 Jg\(^{-1}\)K\(^{-1}\), specific latent heat of fusion of ice = 336 Jg\(^{-1}\)]

• A. 105J
• B. 3255J
• C. 3465J
• D. 16821J

(a) What is meant by dispersion of white light?

(b) State the colours in the spectrum of white light in ascending order of their wavelengths

(c) Which colour is deviated.

(i) least

(ii) most?

(d) Explain why white light is dispersed when it passes through a glass prism.

(e) Describe, with the aid of a labelled diagram, how a pure spectrum of white light can be produced on a screen.

Which of the following is NOT a limitation of experimental measurements?

• A. Systematic error
• B. Instrument resolution
• C. Random errors
• D. Human error

When the pressure of a fixed mass of gas is doubled at constant temperature, the volume of the gas is

• A. increased four times
• B. doubled
• C. unchangeable
• D. halved

A relative density bottle of volume 50cm³ is completely filled with a liquid at 30^oC. It is then heated to 80^oC such that 0.75cm³ of the liquid is expelled. Calculate the apparent cubic expansivity of the liquid.

• A. 0.00030k^-1
• B. 0.00032k^-1
• C. 0.01970k^-1
• D. 0.02030k^-1

Which of the following particles/rays do not originate from the nucleus of an atom?

• A. Alpha particles
• B. Beta particles
• C. Neutrons
• D. X-rays

Which of the following correctly explain(s) why a green leaf appears green in bright day light? i. it absorbs only the green component of sunlight. ii. it absorbs all colour of sunlight except green. iii. it reflects only the green component of sunlight.

• A. i only
• B. ii only
• C. i and iii only
• D. ii and iii only

The velocity ratio of a machine is 5 and its efficiency is 75%. What effort would be needed to lift a load of 150N with the machine?

• A. 20N
• B. 30N
• C. 40N
• D. 50N

A cell can supply current of 0.4 A and 0.2 A through a 4.0Ω and 10.0Ω resistors respectively. This internal resistance of the cell is

• A. 2.0Ω
• B. 1.0Ω
• C. 2.5Ω
• D. 1.5Ω

What is the average velocity of the sprinter whose velocity time graph is as shown below

• A. 85.0ms^-1
• B. 17.0ms^-1
• C. 8.5ms^-1
• D. 1.7ms^-1