OAU Physics 2010/2011 Past Questions

Which of these is not a fundamental S.I. unit

If two masses 40g and 60g respectively, are attached firmly to the end of a light metre rule, what is the centre of gravity of the system?

To find the dept of the sea, a ship sends out a second waves and receives an echo after one second. If the velocity of sound in water is 1500m/s, what is the depth of the sea

What is the neutron in the Uranium isoptope ²³⁸_92X

A machine has a velocity ratio of 5. If it requires a 50kg weight to overcome 200kg weight, the efficiency is

If the force on a charge of 0.2 coulomb in an electric field is 4N, then electric intensity of the field is

The resistance of a wire depends on

Which of these is not contained in a dry cell?

When a yellow card is observed through a blue glass, the card would appear as

A device that converts sound energy into electrical energy is

Radio waves have velocity of 3 x 10⁸ms^-1, if a radio station sends out a broadcast on a frequency 800KHz, what is the wavelength of the broadcast?

The mode of heat transfer which does not require material medium is

The height at which the atmosphere ceases to exist is about 80km, if the atmospheric pressure on the ground level is 760mmHg, the pressure at height of 20km above the ground is

A simple pendulum 0.6m long has a period of 1.55, what is the period of a similar pendulum 0.4m long in the same direction

Which of the following is common to evaporation and boiling, they

A house hold refrigerator is rated 200 watts. If electricity costs 5k per kwh, what is the cost of operating it for 20days

The resistance of a 5m uniform wire of cross sectional area of 0.2 x 10⁶m² is 0.45. What is the resistivity of the material of the wire?

Which of the following instrument has pure tone?

Four lenses are being considered for use as a microscope object. Which of the following focal length is most suitable

The product PV where P is pressure and V is a volume has the same unit as

The force with which an object is attracted to the earth is called

The refractive index of a liquid is 1.5, if the velocity of light in a vacuum is 3.0 x 10⁸ms², the velocity of light in the liquid is

A train has an initial velocity of 44m/s and an acceleration of -4m/s what is its velocity after 10 seconds?

A man of mass 50kg ascends a flight of stair 5m high in 5 seconds. If acceleration due to gravity is 10ms^-2, the power expanded is

Two strings of the same length and under the same tension give notes of frequency in the ratio 4:1. The masses of the strings are in the ratio of