Physics JAMB Past Questions

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1376

Alternating current can induce voltage because it has a

A. ripple value
B. varying magnetic field
C. weaker magnetic field than direct current
D. stonger magnetic field than direct current
E. high peak value

View Answer & Discuss (3) JAMB 1981

1377

Two particles X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. the ratio of the time taken by X to that taken by Y is

A. \(\frac{1}{2}\)
B. \(\frac{2}{\sqrt2}\)
C. \(\frac{1}{\sqrt2}\)
D. \(\sqrt 2\)
E. 4

View Answer & Discuss (26) JAMB 1981

1378

a balloon inflated with helium gas at ground level is released. As it rises through a constant temperature atmosphere.

A. its pressuren reduces but volume remains constant
B. te product of pressure and volume remains constant
C. both pressure and volume increases
D. its pressure remains constant but the volume decreases
E. both pressure and volume remains constant

View Answer & Discuss (6) JAMB 1981

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1379

Change of state is accompanied by change of?

A. temperature
B. volume
C. heat content
D. temperature and volume
E. volume and heat content

View Answer & Discuss (9) JAMB 1981

1380

The quantity (timbre) of sound depends on

A. amplitude
B. frequency
C. harmonics
D. velocity
E. wavelength

View Answer & Discuss (10) JAMB 1981

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