Physics JAMB Past Questions

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1631

Which of the following may be used to determine the relative humidity in a physics laboratory

I. Manometer
II. Wet-and-Dry Bulb Hygrometer
III. Hair Hygrometer
IV. A Hydrometer

A. I Only
B. II and III Only
C. II Only
D. III Only
E. II,IIIand IV Only

View Answer & Discuss (7) JAMB 1983

1632

In a radioactive series

\( ^{235} _{92}L \to ^{235} _{92}M \to ^{231} _{90}N \to ^{231} _{91}\phi \)

The particles emitted are respectively

A. \( \beta , \beta , \alpha \)
B. \( \alpha , \gamma , \beta \)
C. \( \gamma , \alpha , \beta \)
D. \( \alpha , \alpha , \beta \)
E. \( \beta , \alpha , \beta \)

View Answer & Discuss (7) JAMB 1982

1633

A concave lens of focal length 20cm form an image 1/2 the size of the object. The object distance is

A. 100cm
B. \( \frac{100}{q} \)
C. 60cm
D. \( \frac{60}{7} \)
E. None of the above

View Answer & Discuss (17) JAMB 1979

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1634

The amount of heat required to raise the temperature of a body is

A. Thermal energy
B. thermal conduction
C. heat loss
D. specific heat capacity
E. thermal capacity

View Answer & Discuss (8) JAMB 1978

1635

Two lamps are rated 40W and 220V each are connected in series. The total power dissipated in both lamps is

A. 10W
B. 20W
C. 40W
D. 80W
E. None of the above

View Answer & Discuss (28) JAMB 1978

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