UNIZIK Physics 2007/2008 Day 2 Past Questions

The frictional force between two bodies .........

An ice cube floats in a glass of water drilled to the brim. What happens when the ice melts?

The internationally agreed system of units (SI) for physical measurements are

To determine the weight of an object, you could:

The density of a solid is defined as the

A few grains of table salt were put in a cup of cold water kept at a constant temperature and left undisturbed. Eventually, all the water tasted salty, this action is due to

The heat from the sun reaches the earth by the process of

Two lamps rated 40w and 220v each are connected in series. The total power dissipated in both lamps is;

The amount of heat required to raise the temperature of a body is :

If PHCN charges N5 per KWh, what is the cost of operating for 24 hours a lamp requiring 1A on a 200v line?

The electric supply from the national grid at Kanji darn is transmitted at high voltages of the order of hundreds of kilovolts but it is converted to domestic use of about 200 to 220 volts by:

Two boys are communicating with each other by stretching a string passing through a hole punched in the bottom of each of two tin cans. The physical principle employed is that sound travels.

The temperature at which the water vapour present in the air saturated the air and begins to condense is known as

An object is position between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror. The number of images formed is:

If the volume of a given mass of gas at constant pressure is proportional to the absolute temperature, the gas is said to obey:

Which of the following does not cause a reduction of the surface tension of water?

A generator is connected to fifteen 40w lamps and a musician's 600w amplifier. How much energy is used if the generator runs for 6 hours?

which of the following elements is the best absorber of X-rays?

When heat is applied to one end of a metal rod, the molecules at the other end soon begin to vibrate with greater amplitude than before because heat has been transferred by

The plane mirrors in a Kaleidoscope are usually placed: