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.Management Sciences
Category: Physics Mcqs
The periodic alternation of sound between maximum and minimum loudness are called___________________?
A. silence zone
B. interference
C. beats
D. resonance
Which one of the following has the largest energy content ?
A. 103 photons of wavelength 2 pm (γ-rays)
B. 102 photons of wavelength 1nm (x-rays)
C. 106 photons of wavelength 50?m (infrared)
D. 106 photons of wavelength 200nm (UV)
In any measurement the significant figures are______________?
A. All accurately known and all doubtful digits
B. Only accurately known digits
C. Only doubtful digits
D. All accurately known digits and the first doubtful digit
Which shows the correct relation between time of flight T and maximum height H ?
A. H=gT2/8
B. H=8T2/g
C. H=8g/T2
D. H=gT2
Electron cannot exist in the nucleus it is confirmed by observing that______________?
A. It does emit radiation
B. Its size as compare to proton and neutron is very small
C. No antiparticle of electron is present
D. The velocity of electron must be very high according to uncertainty principle
pure resistor circuit the voltage and current are_______________?
A. Lagging each other
B. They are at 90? phase difference
C. They have zero phase difference
D. No phase difference
A voltage V = V0 cos ωt is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by___________?
A. V√/√2R
B. V/√2√R
C. V02/√2R
D. 2/√2√R
Gravitational P.E of a body has____________________?
A. no formula
B. a formula mgh only
C. a formula
D. no general formula
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