Jamb Physics 2018 Past Questions and Answers

Question 21:

• JAMB 2018

Which of the following has the lowest internal resistance when new?

A. Leclanche cell
B. Daniell cell
C. Torch battery
D. Accumulator

Question 22:

• JAMB 2018

The pitch of an acoustic device can be increased by

A. Decreasing the loudness
B. Increasing the intensity
C. Increasing the frequency
D. Decreasing the intensity

Question 23:

• JAMB 2018

One of the features of the fission process is that

A. It leads to chain reaction
B. Its products are not radioactive
C. Neutrons are not released
D. The of the masses of the reactants equals the sum of the masses of the products

Question 24:

• JAMB 2018

The linear expansivity of brass is 2 x 10\(^{-5}\) C\(^{-1}\). If the volume of a piece of brass is 15.00cm at 0°C, what is the volume at 100°C

A. 16.03cm\(^3\)
B. 15.09cm\(^3\)
C. 16.00cm\(^3\)
D. 15.03cm\(^3\)

Question 25:

• JAMB 2018

A lead bullet of mass 0.05 kg is fired with a velocity of 200 m/s into a lead block of mass 0.95 kg. Given that the lead block can move freely, the final kinetic energy after impact is

A. 100J
B. 150J
C. 50J
D. 200J