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Physics Past Questions and Answers

Neco Physics Questions

Question 231:

Which of the following is used for shielding radioactive fallout?

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A Aluminum
B Lead
C Iron
D Plastic
E Wood

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Question 232:

The charge of an alpha particle can be neutralized by

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A 1 beta particle
B 2 photons of gamma rays
C 2 beta particles
D 4 beta particles
E 4 photons of gamma rays

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Question 233:

Which of the following statements is correct?

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A Alpha particles have a large mass and high penetrating power
B Alpha particles have a small mass and a low penetrating power
C Beta partials have no mass and a high penetrating power
D Beta particles have a large mass and a low penetrating power
E Gamma rays have no mass and a high penetrating power

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Question 234:

Which of the following will reduce the frequency of oscillation of a simple pendulum?

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A Decreasing the length of the string
B Increasing the amplitude of oscillation
C Increasing the length of the string
D Increasing the mass of the bob
E Reducing the mass of the bob.

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Question 235:

A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is

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A Fs cos θ
B Fs cosec θ
C Fs sec θ
D Fs sin θ
E Fs tan θ

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