2022 JAMB Physics Past Questions CBT

Which of these is a derived unit?

A bar magnet is divided into two pieces, which of the following statement is correct?

Consider the wave equation y = 5mm sin [1cm^-1 x – 60s^-1t]. The wave number is?

An object 40 cm high is 30 cm from the pinhole camera. If the height of the image formed is 20 cm. What is the distance of the image from the pinhole camera?

A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?

Tyres are treaded to?

A car starts from rest and covers a distance of 40 m in 10 s. Calculate the magnitude of its acceleration.

The relationship between the coefficient of linear expansion (α) and volumetric expansion (γ) is

Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?

A cell whose internal resistance is 0.55 Ω delivers a current of 4 A to an external resistor. The lost voltage of the cell is?

Which of the following liquids is a poor conductor of electricity?

An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?

The secondary pigments consist of

A person standing waist-deep in a swimming pool appears to have short legs because of light

A tuning fork having a frequency of 312 Hz emits a wave which has a wavelength of 1.10 m. Calculate the velocity of sound.

When the plate area of a capacitor increases

A magnet relay is a device used for

According to kinetic molecular model in gases,

A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?

For a pear-shaped conductor shown above, the concentration of charge on the outside is highest at

The vapour pressure

The potential energy in an elastic string of force constant k, which has an extension x is

A reservoir is filled with liquid of density 2000 kgm⁻³. Calculate the depth at which the pressure in the liquid will be equal to 9100 Nm⁻² (g = 10 ms⁻²)

Water is not a good thermometric liquid because it

Which of these is a second-class lever?

In the formation of sea breeze, wind blows from

Which component of fiber-optic connector has a provision of entry for the fibre along with the fixation to connector housing?

In order to view the sun, the most suitable instrument to use is

The eclipse of the moon occurs when

The gravitational pull on the moon is \(\frac{1}{6}\) that of the earth. If a body weighs 6.0 N on the moon, what will be the weight on the earth?

The amount of energy required to change a kilogram of ice block into water without a change in temperature is

Which expression gives magnetic flux?

The graph of pressure (P) against the reciprocal of the volume \( \left( \frac{1}{V}\right) \) in Boyles’s law is a

What quantity of heat is required to convert 20 g of ice at 0ºC to water at the same temperature? (Specific latent heat of ice = 336 Jg⁻¹)

A train of mass 1600 kg attains a speed of 25 ms⁻¹ in 20 seconds. The power developed in the engine is

The main factor which affects the speed of sound wave is the

A semiconductor is formed by

One of the following is a scalar quantity

The mercury column in the barometer at normal atmospheric pressure has a height of

If an object just begins to slide on a surface inclined at 30º to the horizontal,the coefficient of friction is