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Physics Past Questions and Answers

Jamb Physics Questions

Question 2201:

<img src='https://www.schoolngr.com/eattachments/010264e7ec0d7c372a7380f73265733ebadf8cb4' width='300'/><br/>In the study of Physics, temperature and heat are often confused with each other. Which of the following statements correctly defines these two elements?

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A Temperature is a measure of the average kinetic energy of the molecules of a substance
B Heat is a measure of the total kinetic energy of the molecules in a system
C Different materials require different amounts of heat to cause a given change in temperature
D All of the above

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Question 2202:

<img src='https://www.schoolngr.com/eattachments/48d92f01c911a4c7856e05b6bbf2104687a21fe1' width='300'/><br/>The effect of closing the key K in the circuit shown in the figure above would be to?

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A Increase the current by 0.4A
B Reduce the current by 0.4A
C Increase the current by 0.6A
D Reduce the current by 0.6A

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Question 2203:

Which of the following statements on the use of X-rays is incorrect? X-rays are used

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A In a hospital to obtain photographs of tissues and bones in the body
B For the treatment of malignant growths like cancer cells
C In detecting fingerprints
D To reveal hidden flaws in metal castings and welded joints work of art

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Question 2204:

Natural radioactivity consists of emission?

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A \(\alpha\)-particles and \(\beta\)-rays
B \(\alpha\)-particles and X-rays
C \(\gamma\)-ray and X-rays
D \(\alpha\)-particles and \(\beta\)-rays and \(\gamma\)-rays

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Question 2205:

If a source of solid is moving, a stationary listener will hear a sound of different frequency. This is called?

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A Doppler effect
B Resonance
C Ultra sound
D Rarefaction

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