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Physics Past Questions and Answers

Jamb Physics Questions

Question 2251:

When the breaks in a car are applied, the frictional force on the tyres is?

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A A disadvantage because it is in the direction of the motion of the car
B A disadvantage because it is in the opposite direction of the motion of the car
C An advantage because it is in the direction of the motion of the car
D An advantage because it is in the opposite direction of the motion of the car

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Question 2252:

If the stress on a wire is 10\(^{7}\)NM\(^{-2}\) and the wire is stretched from its original length of 10.00 cm to 10.05 cm. The young's modulus of the wire is?

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A 5.0 x 10\(^{-4}\)Nm\(^{-2}\)
B 5.0 x 10\(^{-5}\)Nm\(^{-2}\)
C 2.0 x 10\(^{-8}\)Nm\(^{-2}\)
D 2.0 x 10\(^{9}\)Nm\(^{-2}\)

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Question 2253:

If the fraction of the atoms of a radioactive material left after 120 years is 1/64, what is the half-life of the material?

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A 24 years
B 20 years
C 10 years
D 2 years

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Question 2254:

A certain radioactive source emits radiation that was found to be deflected by both magnetic and electric fields. The radiation is?

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A Beta rays
B Gamma rays
C X-rays
D Ultra-violet rays

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Question 2255:

The inner diameter of a test tube can be measured accurately using a?

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A Micrometer screw gauge
B Pair of dividers
C Meter rule
D Pair of vernier calipers

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