Jamb Physics 1995 Past Questions and Answers

Question 21:

• JAMB 1995

A well-lagged bar of length 100cm has its ends maintained at 100^oC and 40^oC respectively. What is the temperature at a point 60cm from the hotter end?

A. 58^oC
B. 62^oC
C. 64^oC
D. 76^oC

Question 22:

• JAMB 1995

Which of the following is the exclusive property of a transverse wave?

A. Diffraction
B. Refraction
C. Compression
D. Polarization

Question 23:

• JAMB 1995

The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz?

A. 7500m
B. 300m
C. 75m
D. 15m

Question 24:

• JAMB 1995

The difference between sound waves and light waves is that sound waves

A. Are transverse while light waves are longitudinal
B. Require a medium to travel while light waves does not
C. Can be diffracted but light waves cannot
D. Cannot be reflected but light waves can

Question 25:

• JAMB 1995

The pitch of an acoustic device can be increased by

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