(a) What is the principle upon which the lighting in fluorescent tubes operate? (b) State two factors on which the colour of light from a fluorescent tube d...

(a) Define Young's modulus. (b) State the physical quantities one has to measure in order to determine the Young's modulus of a wire.

Explain plane polarisation of light

(a) State Hooke's law of elasticity (b) A spiral spring, loaded with a piece of metal, extends by 10.5cm hair. When the metal is fully submerged in water, th...

In an electrolysis experiment, the ammeter records a steady current of 1A. The mass of copper deposited is 0.66g in 30 minutes. Calculate the error in the am...

(a) What is surface tension? (b) State two methods by which the surface tension of a liquid can be reduced.

(a) List two types of waves, apart from light, that can be plane polarised (b) State two applications of plane polarised light.

(a) Explain electrolysis (b) Classify the following substances as electrolytes and non-electrolytes: Sugar solution: paraffin, suit solution and grape fruit ...

A stone is projected horizontally from the top of a tower with a speed of 5ms-1. It lands on the ground level at a horizontal distance of 20m from the foot o...