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Physics Past Questions and Answers

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Physics Questions

Question 4091:

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 4092:

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 4093:

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 4094:

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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Question 4095:

Which of the following can be described as high tension transmission?

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A High resistance and low voltage
B Low current and high voltage
C High current and low voltage
D High current and low resistance

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