Jamb Physics 2022 Past Questions and Answers

Question 16:

• JAMB 2022

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

A. 7.06 x 10\(^{3}\)J
B. 5.38 x 10\(^{3}\)J
C. 6.72 x 10\(^{3}\)J
D. 1.35 x 10\(^{3}\)J

Question 17:

• JAMB 2022

A train of mass 1600 kg attains a speed of 25 ms\(^{-1}\) in 20 seconds. The power developed in the engine is?

A. 2.5 KW
B. 80 KW
C. 25 KW
D. 50 KW

Question 18:

• JAMB 2022

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

A. Properties of the medium
B. Amplitude of the sound wave
C. Intensity of the sound wave
D. Loudness of the sound wave

Question 19:

• JAMB 2022

A semiconductor is formed by?

A. Co-ordinate bonds
B. Electrovalent bonds
C. A substance free of bonds
D. Covalent bonds

Question 20:

• JAMB 2022

One of the following is a scalar quantity?

A. Weight
B. Momentum
C. Potential energy
D. Displacement