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.Management Sciences
Category: Physics Mcqs
In laser production the state in which more atoms are in the upper state than in the lower one is called_____________?
A. Metal stable state
B. Normal state
C. Inverted population
D. All the above
Three students measured the length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is a correct record ?
A. Only (i)
B. Only (ii)
C. Only (iii)
D. Both (i) and (ii)
The acceleration of a projection on the diameter for a particle moving along a circle is_______________?
A. w2x
B. wx2
C. w2x
D. wx2
Mass of neutron is________________?
A. 1.67 x 10-31 kg
B. 1.67 x 10-27 kg
C. 9.1 x 10-31 kg
D. 1.67 x 10-19 kg
Which law of motion is also called law of inertia ?
A. 1st law
B. 2nd law
C. 3rd law
D. all 1st, 2nd and 3rd laws
Terminal velocity of the body is directly proportional to the_______________?
A. The radius of the body
B. The diameter of the body
C. Size of the body
D. Square of the diameter of the body
An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?
A. I = 2I∫Sin(πt/2)
B. I = 2I∫Sin(2πt)
C. I = 2ISinπt
D. I = I∫sin(2πt)
The area under the force displacement graph represents__________________?
A. area
B. work done
C. power
D. none of these
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