2016 JAMB Physics Past Questions CBT

If a current of 2.5 A flows through an electrolyte for 3 hours and 1.8 g of a substance is deposited, what is the mass of the substance that would be deposited if a current of 4 A flows through it for 4.8 hours?

In a common-emitter configuration, the output voltage is through the

The diagram above shows the positions of a cone. The position which can be described as neutral equilibrium is represented as

A force of 500 N is applied to a steel wire of cross-sectional area of 0.2 m², the tensile stress is

The sensitivity of a galvanometer is increased by

PHCN measures its electrical energy in

Calculate the force acting on an electron of charge 1.5 × 10^-19 C placed in an electric field of intensity 10⁵ Vm^-1

The bond between silicon and germanium is

From the diagram above, the point that represents the elastic limit is

The correct expression for the potential at a point, distance r from a charge q, in an electric field is

A circuit has a resistance of 200 Ω. The resistance of the circuit can be reduced to 120 Ω when

Which of the following is a property of steel?

Which parts of a d.c generator convert an a.c in the armature to a d.c in the external circuit?

If a container is filled with ice to the brim, what happens to the level of water when the ice completely melts?

If a sonometer has a fundamental frequency of 450 Hz, what is the frequency of the fifth overtone?

When a red rose flower is observed in blue light, what colour does the observer see?

Which type of motion do the wheels of a moving car undergo?

If a pump is capable of lifting 5000 kg of water through a vertical height of 60 m in 15 min, the power of the pump is [g = 10 ms^-2]

If a charge of 2 μC is situated  in a field of intensity 400 NC^-1, the force on the charge is

The capacitance of a parallel plate capacitor is 20 μF in air and 60 μF in the presence of a dielectric. What is the dielectric constant?

If a metal wire 4 m long and cross-sectional area 0.8 mm² has a resistance of 6 Ωm, find the resistivity of the wire.

A train with an initial velocity of 20 ms^-1 is subjected to a uniform deceleration of 2 ms^-2. The time required to bring the train to a complete halt is

An electric device is rated 2000 W, 250 V. Calculate the maximum current it can take.

When a brick is taken from the earth’s surface to the moon, it’s mass

Steam from boiling water causes more damage to the skin than boiling water itself because

The ground is always cold at night because the

A radioactive isotope has a decay constant of 10^-5 s^-1. Calculate its half-life.

What type of reaction is represented by the equation below?

\( \scriptsize ^{2}_{1}X \: +\: ^{2}_{1}X \: \rightarrow\: ^{3}_{2}Y \: +\: ^{1}_{0}n \: +\: Energy \)

Which of the following has no effect on radiation?

The particle nature of light is demonstrated by the

Which of the following could be effectively used to reduce friction?

From the diagram above, calculate the moment of a force about point O.

I. Electrical potential
II. Torque
III. Kinetic energy
IV. Momentum

Which of the quantities listed above are vectors?

The instrument used for accurate measurement of the internal and external diameters of a pipe is the

In alternating current circuit at resonance, the angle of lead or lag is

When a charge moves through an electric circuit in the direction of an electric force, it

An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15 cm, what is the object distance?

In a compound microscope, the objective and the eye piece focal lengths are

A man 1.5 m tall is standing 3 m in front of a pinhole camera whose distance between the hole and the screen is 0.1 m. What is the height of the image of the man on the screen?

I. Change of state
II. Diffusion
III. Radiation
IV. Osmosis

Which of the processes above can be explained using the kinetic theory?

I. Density of the liquid.
II. Depth below the surface of the liquid.
III. Surface Area of the Liquid.

In which of the statements above will pressure be dependent?

A piece of cork floats in a liquid. What fraction of its volume will be immersed in the liquid? [density of the cork = 0.25 × 10³ kgm^-3, density of the liquid = 1.25 × 10³ kgm^-3]

A block of aluminium is heated electrically by a 30 W heater. If the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminium is

A copper rod is 10.0 m at 30°C. Find its new length when it is heated to 50°C. [Linear expansivity of copper = 1.7 × 10^-5 K^-1]

The angle of deviation of light of various colors passing through a triangular prism increases in the order.

If a tube of small radius opened at both ends is placed in a liquid, the liquid will

I. Coherence
II. Same frequency
III. Same wavelength
IV. Same intensity

Which of the conditions above are necessary to produce interference fringes?

A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their

The coefficient of friction between two perfectly smooth surface is

A car accelerates uniformly from rest at 3 ms^-2, Calculate its velocity after traveling a distance of 24 m.