Who is considered the founder of meteorology?
Correct answer A. Aristotle
Topic / 897 questions
Physics MCQs
Page 44 of Physics multiple-choice questions with answers. Tap an option to check yourself.
Page 44 of 45
The instrument used to measure wind speed is?
Correct answer A. Anemometer
The SI unit of electric current is?
Correct answer B. Ampere
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Which from the following is NOT a conductor?
Correct answer D. All are conductors
Which from the following is true for “Sound”?
Correct answer A. Sound cannot travel through a vacuum
In railway tracks, a small gap is left between the rails?
Correct answer C. To allow for the expansion during heat
Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f?
Correct answer B. 90W
Fundamental frequency of stationary waves in open pipe is ____ times the frequency in closed pipe?
Correct answer B. Two
Laplace found that the alternate compressions and rarefactions produced in sound waves follows?
Correct answer B. adiabatic law
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Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are?
Correct answer D. both A and C
A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency?
Correct answer C. frequency lower than 20 Hz
It is possible to distinguish between transverse and longitudinal waves form the property of?
Correct answer B. polarization
Which one is the correct relation for fundamental frequency of open and closed pipe?
Correct answer A. fopen = 2 fclosed
The velocity of sound in air would become double than its velocity at 0°C at temperature?
Correct answer C. 819°C
A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe?
Correct answer A. always an node in formed
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The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is?
Correct answer A. 1 N
When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are?
Correct answer A. 5m/s, 1m/s
Which of the following is not an example of projectile motion?
Correct answer A. a gas filled ballon
The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be?
Correct answer B. 1
A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10?
Correct answer A. 14 m