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.Management Sciences
Category: Physics Mcqs
Which one of the following is nearly monochromatic light ?
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A. light form fluorescent tube
B. light form neon lamp
C. light form sodium lamp
D. light form simple lamp
One mega watt hour is equal to_________________?
A. 36 x 106 J
B. 36 x 1012 J
C. 36 x 109 J
D. 36 x 108 J
Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________?
A. Concurrent
B. Non-concurrent
C. Parallel
D. Non-parallel
Waves emitted from the antenna are__________________?
A. Sound waves
B. Electromagnetic waves
C. Radio waves
D. Modulated waves
Materials that undergo plastic deformation before breaking are called __________________?
A. Brittle
B. Ductile
C. Amorphous
D. Polymers
Magnetic flux and flux density are related by___________________?
A. magnetic flux = flux density / area
B. magnetic flux = flux density x area
C. flux density = magnetic flux area
D. flux density = magnetic flux x area
n instrument which can measure potential without drawing any current is_____________________?
AA. voltmeter
B. galvanometer
C. cathode ray oscilloscope (CRO)
D. ammeter
A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________?
A. (R+2πfL)
B. R+1/2πfL
C. (R2+f2L2)
D. (R2+4π2f2L2)
If a photon is reflected from the mirror then the change in momentum of each photon is_______________?
A. Zero
B. Double
C. Half
D. 1
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