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.Management Sciences
Category: Physics Mcqs
Electrical energy is converted to heat at the rate of___________________?
A. IRt
B. I2R
C. I2Rt
D. VIt
A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?
A. always an node in formed
B. always an antinode is formed
C. neither node nor antinode is formed
D. sometimes a node and sometimes an antinode is formed
The minimum wavelength of X-rays can further be reduced by _______________?
A. Reducing the pressure or cooling the target
B. Increasing the temperature of the filament.
C. Using a target element of higher atomic number
D. Increasing the potential difference between the cathode and the target
The escape velocity of a body in gravitational field of earth is independent of__________________?
A. its mass
B. the angle at which it is thrown
C. both its mass and the angle at which it is thrown
D. gravitational field of earth
Photon of highest frequency will be absorbed when transition takes place from_____________?
A. 1st to 5th orbit
B. 2nd to 5th orbit
C. 3rd to 5th orbit
D. 4th to 5th orbit
Electromagnetic waves travel in free space with the speed of___________________?
A. λ-rays
B. Positive rays
C. Cathode rays
D. More than sound waves
The velocity of the mass attached to a spring is maximum at_______________?
A. Mean position
B. Extreme position
C. Both A and B
D. None
Simple harmonic motion is a type of________________?
A. Rotational motion
B. Circular motion
C. Musical arrangement
D. Vibratory motion
Light on passing through a Polaroid is ___________________?
A. plane polarized
B. un-polarized
C. circularly polarized
D. elliptically polarized
Michelson calculated the speed of light using the instruments______________?
A. spectrometer
B. galvanometer
C. interferometer
D. none of these
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