Physics JAMB Past Questions

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1311

the speed of light in vacuum is 3.0 x 10⁸ms^-1. If the refractive index of a transparent liquid is \(\frac{4}{3}\), then the speed of light in the liquid is

A. 0.44 x 10 ⁸ms^-1
B. 2.25 x 10 ⁸ms^-1
C. 3.0 x 10 ⁸ms^-1
D. 4.0 x 10 ⁸ms^-1
E. 4.33 x 10 ⁸ms^-1

View Answer & Discuss JAMB 1983

1312

If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric field intensity of the field is

A. 0.8
B. 0.8N/C
C. 20.0N/C
D. 4.2N/C

View Answer & Discuss (3) JAMB 1983

1313

The specific latent heat of vaporization of a substance is always?

A. less than its specific latent heat of fusion
B. greater than its specific heat of fusion
C. equal to its specific latent heat of fusion
D. all of the above depending on the nature of the substance
E. none of the above

View Answer & Discuss (4) JAMB 1983

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1314

Longitudinal waves do not exhibit

A. Refraction
B. Reflection
C. Diffraction
D. Polarization
E. Rarefaction

View Answer & Discuss (1) JAMB 1983

1315

The hatch door of a submarine has an area of 0.5m². The specific gravity of sea water is 1.03. Assume that g = 10ms^-1,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is

A. 1.03 x 10⁵N
B. 1.03 x 10⁴Nm^-2
C. 1.06 x 10⁵Nm^-2
D. 2.06 x 10⁶N
E. 1.03 x 10³N

View Answer & Discuss (8) JAMB 1982

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