PHYSICS PAST QUESTIONS

The diagram above is a micrometer screw gauge. Determine its reading

The graph of density against temperature for water is correctly illustrated by

Which of the following devices converts light energy to electrical energy?

In a school compound a girl walks 40km due east from the laboratory to the staff room to submit her report. Then she returns and walks 30m due north to her classroom. Determine the magnitude of her displacement from the10m laboratory

Which of the following statements about the 3rd overtone of a vibrating air column of an open pipe is correct? It has

The maximum density of water occurs at a temperature of

The pair of musical instruments that works on the vibration of air in pipes is

The S.I unit for sound energy is

When a body is thrown vertically upwards, its velocity at the maximum height is

A body of mass m moving around a circle of radius r with a uniform speed v experiences a centripetal force F. The work done by the centripetal force on it is

Which of the following statements describes a body in a stable equilibrium correctly?

A uniform metre rule is balanced on a fulcrum placed at the 35cm mark by suspending a mass of 120g at the 10cm mark. Calculate the mass of the metre rule.

The diagram given illustrates the waveform of a note produced by vibrations in an air column of length L. If the speed of sound in air is V, derive an expression for the frequency of the notes

A dam is able to hold a large quantity of water because its wall is

Which of the following units is derived?

Resonance occurs when one vibrating object causes a second object to vibrate at its own natural

An object floats in a fluid when it displaces it's

A body is whirled round a circular path at constant speed. Which of the following diagrams correctly indicates the direction of the body's velocity (v) and its acceleration (a)?

Which of the following graphs correctly represents the relationship between the kinetic energy (K.E) and the displacement (d) from point of release of a swinging pendulum bob?

The diagram above illustrates a wave setup between two fixed ends 4.0m apart. If the speed of the wave is 1.0 , its wavelength and frequency respectively are

The continuous stirring in the method of mixtures to determine the specific thermal capacity of a substance ensures

The image formed by a concave mirror is real, inverted and magnified, when object is placed

An object of volume 400cm³ and 2.5gcm^-3 is suspended from a spring balance with half its volume immersed in water. Determine the reading on the spring balance. (Density of water = 1gcm^-3)

The diagram above illustrates a simple barometer. Which distance measures the atmospheric pressure?

A body can undergo the following types of motion except

A converging lens of focal length 10cm forms an erect image three times the size of the real object. Calculate the distance between the image and the object

A ball is dropped from the top of a tower. Due to air resistance,it reaches terminal velocity. Which of the following statement(s) about its motion is/are correct? i. The acceleration of the ball is zero. ii. The net force on the ball is zero. iii. The velocity of the ball increases.

Materials that can be stretched and still return to their original forms when the stresses are removed are said be

The bob of a simple pendulum takes 8.0s to complete 10 oscillations. Determine the frequency of oscillation of the bob.

The diagram given, represents the graph of stress against strain for an elastic wire. The point Q on the graph is the

The diagram given is used to determine the

The ice point on the absolute scale of temperature is

Which of the following statements is correct about the effect of dissolved salt on the freezing point of water?

Which of the following statements about mass and weight are correct?

i. Weight is the force of gravity on a body.

ii. The mass of a body is the quantity of matter in the body.

iii. The weight of a body is greatest at the equator.

iv. The mass of a body is greatest at the poles

Consider the wave equation:  $y=10sin(x-50t)$, What does the number 10 represent?

X-rays and infrared rays are both electromagnetic. Which common property do the waves have? Both waves

A battery of emf 24V is connected to three resistor P, Q and R as illustrated in the diagram. Determine the voltage across the resistor Q

The diagram above illustrates two waves of equal amplitudes A and frequencies approaching each other. When the two waves meet at a point I midway between them, the vertical displacement of the resulting wave will be

A plane is inclined at an angle $\theta$ to the horizontal. Its velocity ratio is

A student measures the volume of a liquid using a measuring cylinder. What else needs to be measured by the student in order to determine the density of the liquid?

Which of the following statements correctly defines the boiling point of a liquid? The temperature at which the

Complementary colours are those which

A quantity of hot water at 100^oC is added to 400g of water at 10^oC until the temperature of the mixture is 60^oC.

Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg^-1 K^-1]

Total internal reflection. i. is a phenomenon of refraction of light. ii. occurs when light rays travel into a denser medium. iii. occurs when the critical angle is just exceeded. iv. is a phenomenon of reflection of light. Which of the statements above are correct?

In an experiment in which a molten substance is allowed to cool, the cooling curve above was obtained. The temperature 60^oC is known as the

The slope of a straight-line velocity-time graph represents

Two plane mirrors are inclined at an angle 20° to each other. Determine the number of images formed when an object is placed between them.

An object at rest is said to possess

The property of a body to remain at rest or to continue in uniform motion in a straight line is called

Two strings each inclined at an angle 30^o to the horizontal are used to hold a bucket of water weighing 20N. Calculate the tension i n each string.

The crackling noise produced by aluminum roofing sheets on a house during a hot sunny day is a result of

A ball is projected horizontally from the top of a tower. Neglecting air resistance, which of the following statements about its motion is/are correct?

I. Vertical acceleration on the ball decreases as it falls

II. The vertical force on the ball remains constant

III. The vertical speed of the ball increases as it falls

Frequency is measured in

Which of the following statements about matter is not correct?

Thermal energy added or removed from a substance that changes the state of the substance is called

A vapour whose molecules are in dynamic equilibrium with those of its own liquid is said to be

The dimensions of momentum are

The diagram above illustrates the mercury-in-glass thermometer used for determining the temperature of a room. Use the data on it to determine the room temperature.

Plane waves through a narrow gap emerge as circular waves. This phenomenon is known as

Which of the following factors does not increase the rate of evaporation of water in a lake?