Physics JAMB Past Questions

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1346

The point beyond which a stretched spring does not return to its original length is called the

A. breaking point
B. elastic limit
C. spring constant
D. elasticity point
E. release point

View Answer & Discuss (14) JAMB 1982

1347

A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is

A. 3.3cm
B. 6.5cm
C. 7.5cm
D. 10.8cm
E. 15.0cm

View Answer & Discuss (2) JAMB 1982

1348

The ice and steam points of mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread when the length is 12cm, the temperature is

A. 32^oC
B. 48^oC
C. 56^oC
D. 65^oC
E. 75^oC

View Answer & Discuss (10) JAMB 1981

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1349

A vapour is said to be saturated when?

A. more molecules return to the liquid than leave it
B. a dynamic equilibrium exists between the liquid molecules and the vapour molecules at a given temperature
C. the vapour pressure is atmospheric
D. the temperature of the vapour varies
E. all molecules are moving with the same speed