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.Management Sciences
Category: Physics Mcqs
Beats are the results of____________________?
A. diffraction of sound waves
B. constructive and destructive interference
C. polarization
D. destructive interference
Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?
A. Sum of their absolute uncertainties
B. The difference of their absolute uncertainties
C. The product of their absolute uncertainties
D. Division of their absolute uncertainties
Semi-conductors with donor atoms and free electrons belong to the type________________?
A. n
B. p
C. mix
D. any of above
Work done on the body equals to the _____________________?
A. change in its K.E always
B. change in its P.E always
C. change in its K.E and change in its P.E
D. neither change in K.E and nor change in its P.E
The unit of radioactivity curie is equal to________________?
A. 3.74 x 109 disintegration per sec
B. 3.70 x 1010 disintegration per sec
C. 3.55 x 1010 disintegration per sec
D. 3.60 x 1010 disintegration per sec
The net charge on n-type material is____________________?
A. Positive
B. Negative
C. Both positive and negative
D. Neutral
In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?
A. Mercury takes a long time to contract
B. The amount of mercury use is very small
C. The capillary tube has a small constriction near the bulb
D. The capillary tube is very narrow
The pressure exerted by a column of mercury 76cm high and at 0°C is called_______________?
A. 1 atmosphere
B. 1 Newton per square meter
C. 1 Pascal
D. data is insufficient
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