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Category: Physics Mcqs
In S.H.M. the velocity of a particle is maximum at________________?
A. mean position
B. extreme position
C. middle between the mean and extreme position on the right side
D. middle between the mean and extreme position on the left side
If a body a mass of 2 kg is raised vertically through 2m, then the work done will be _________________?
A. 38.2 J
B. 392.1 J
C. 39.2 J
D. 3.92 J
n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then_______________?
IA. V = VR+VL+VC
B. V2 = VR2+VL2+VC2
C. V2 = VR2+(VL-VC)2
D. V2 = VL2+(VR-VC)2
The current through a metallic conductor is due to the motion of _________________?
A. free electrons
B. protons
C. neutrons
D. still under controversy
The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________?
A. Karl-Weins law
B. Rayleigh-Jeans law
C. Stephens law
D. Plancks
The penetrating power of X-rays depends on their______________?
A. applied voltage
B. frequency
C. source
D. all of the above
When velocity time graph is a straight line parallel to time axis then__________________?
A. acceleration is const
B. acceleration is variable
C. acceleration is zero
D. velocity is zero
The velocity of sound in air would become double than its velocity at 0°C at temperature ?
A. 313°C
B. 586°C
C. 819°C
D. 1172°C
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