The time rate of increase in velocity is called

Which of the following quantities is a vector?

In an elastic collision, momentum is conserved as well as

The induced current in a coil always flows in a direction so as to oppose the change that causes it. This statement is known as

Which of the following instruments can be used to compare the magnitudes of charges on two given bodies?

A body of mass 2 kg is released from a point 100 m above the ground. Calculate its kinetic energy 80 m from the point of release.

Which of the following waves is not mechanical?

A loaded spring is set in simple harmonic motion. The force that tends to restore the load to its equilibrium position is

Which of the following cases cannot produce total internal reflection?

The vacuum in a thermoflask reduces heat loss resulting from

The diagram above represents an experimental set-up for verifying

Which of the following statements about a moving object is correct?

If the efficiency of a transformer is 100%, which of the following equations would be correct?

A freshly demagnetized bar magnet is placed in the East-West direction to ensure that,

Which of the following graphs of a charge Q against potential V across capacitor is correct?

A small amount of air is introduced into the vacuum above the mercury in a mercury barometer tube. The mercury level goes down because the air molecules

Calculate the quantity of heat needed to change the temperature of 60g of ice at 0°C to 80°C.

( Specific latent heat of fusion of ice ) = 3.36 × 10⁵ Jkg⁻¹ ,

( specific heat capacity of water ) = 4.2 × 10³ Jkg⁻¹K⁻¹

The wire of a platinum resistance thermometer has a resistance of 3.5Ω at 0°C and 10.5Ωat 100°C. Calculate the temperature of the wire when its resistance is 7.5Ω

A transverse pulse of frequency 9 Hz travels 4.5 m in 0.6 s. Calculate the wavelength of the pulse.

In which of the following media is speed of sound the least?

Which of the following characteristics of waves can a ripple tank be used to demonstrate? I. reflection II. Refraction III. Diffraction

Which of the following graphs gives the correct relationship between energy and mass when mass is converted to energy.

An 800kg car moving at 80 kmhr¯¹ collides with a 1200 kg car moving at 40km hr¯¹ in the same direction. If the cars stick together, calculate their common velocity.

The mass of a load is doubled while the force acting on it is halved. The resulting acceleration of the load is

The maximum and minimum thermometer reads the

An a.c. generator can be converted to a d.c. generator by replacing the

Which of the following statement is the correct reason for using soft iron in making the armature of an electric bell?

The diagram above illustrates a meter bridge circuit under balanced condition. Determine the value of x.

Which of the following devices is used for storing electric charges?

An electron of mass 9.1 × 10⁻³¹ kg moves with a speed of 2.0 × 10⁶ ms⁻¹ round the nucleus of an atom in a circular path of radius 6.1 × 10⁻¹¹ m. Use the information to answer questions 30 and 31.
Determine the angular speed of the electron.

An electron of mass 9.1 × 10⁻³¹ kg moves with a speed of 2.0 × 10⁶ ms⁻¹ round the nucleus of an atom in a circular path of radius 6.1 × 10⁻¹¹ m. Use the information to answer questions 30 and 31.
Determine the angular speed of the electron.

A device consumes 100W of power when connected to a 120 V source. Calculate its resistance

Which property of a wave remains constant when the wave travels from one medium into another?

The anomalous expansion of water occurs in the range

A ray of light travelling from a rectangular glass block of refractive index 1.5 into air strikes the block at an angle of incidence of 30°. Calculate its angle of refraction.

A rectangular piece of iron measuring 4cm by 3cm at 20°C is heated until its temperature increases by 100°C. Calculate the new area of the metal.
[Linear expansivity of iron is 1.2 × 10⁻⁵ K⁻¹]

Two bodies of masses 3.0kg and 2.0kg are separated by a distance of 50cm. Calculate the force of attraction between them. [G = 6.67 × 10⁻¹¹ Nm² kg⁻²]

The diagram above illustrates an object moving in a circular path at constant speed. Which of the arrows indicates the direction of linear velocity?

Which of the following thermometers is used to measure the temperature of the human body?

In the diagram above the time taken to trace a wave between P and Q is

Which of the following materials does not serve as a safety device in electrical circuits?

Which of the following liquids has the highest surface tension?

The nucleon and proton numbers of a neutral atom of an element are 238 and 92 respectively. Determine the number of neutrons in the atom

An instrument used to measure relative humidity

The area under a velocity-time graph represents

Which of the following statements about a neutral atom is correct?

Which of the following properties is not exhibited by sound waves?

When ultraviolet light is incident on certain metallic surfaces, particles are emitted. These particles are called

Niels Bohr drew certain conclusions about the structure of the atom. Which of the following statements is one of those conclusions?

The graph above illustrates the variation of temperature θ with time t for a solid that is being heated. Which processes take place at segments P and Q respectively?