Jamb Physics 2017 Past Questions and Answers

Question 26:

• JAMB 2017

A radio station broadcast at a frequency of 600KHZ. If the speed of light in air is 3 à— 108ms\(^{−1}\). Calculate the wavelength of the radio wave

A. 2.20 à— 10\(^3\)m
B. 5.0 × 10\(^2\)m
C. 5.0 à— 10\(^5\)m
D. 11.8 à— 10\(^{11}\)m

Question 27:

• JAMB 2017

Which of the following is a scalar quantity?

A. Tension
B. Weight
C. Impulse
D. Mass

Question 28:

• JAMB 2017

Determine the focal length of a thin converging lens if the power is 5.0 dioptres

A. 0.1 m
B. 0.2 m
C. 2.0 m
D. 2.5 m

Question 29:

• JAMB 2017

A string of length 5cm is extended by 0.04m when a load of 0.8kg is suspended at the end. How far will it extend if a force of 16N is applied? [g = 10ms\(^{-2}\)]

A. 0.04m
B. 0.12m
C. 0.01m
D. 0.08m

Question 30:

• JAMB 2017

How can energy loss be minimized through Eddy-current?

A. By using high resistance wire
B. By using insulated soft iron wires
C. By using low resistance wires
D. Bu using turns of wires