Physics : General Knowledge Questions and Answers

Q21. The Capacity of a Communication Channel is Measured in

[A] Bit capacity

[B] Data flow

[C] Band rate

[D] Band width

Q22. Pieces of camphor placed on water move about rapidly. This is because of

[A] viscosity

[B] surface tension

[C] capillarity

[D] diffusion

Q23. In a freezer ice cubes will be formed more quickly in trays made of 

[A] aluminium

[B] rubber

[C] plastic

[D] wood

Q24. Air pressure is usually highest when the air is 

[A] warm and dry

[B] cool and dry

[C] cool and moist

[D] warm and moist

750+ Physics Quiz Questions and Answers

Q25. Rain drops acquire spherical shape due to 

[A] surface tension

[B] friction

[C] elasticity

[D] viscosity

Q26. The law of definite proportions was stated by

[A] John Dalton

[B] Proust

[C] Lavoisier

[D] Democritus

Q27. What is measured with the Nephometer?

[A] Salinity of Sea

[B] volume of rainfall

[C] Cloud volume and speed

[D] All of these

Q28. Nuclear sizes are expressed in a unit named

[A] Angstrom

[B] Newton

[C] Tesla

[D] Fermi

Q29. Ultrasonic waves are used for stirring liquid solutions because they 

[A] are easy to produce

[B] do not produce chemical reactions in the solution

[C] do not produce noise during the operation

[D] can produce perfectly homogeneous solutions

Q30. Ball bearings are used in cycles, scooters etc to

[A] Reduce the friction between ground and the whee

[B] Increase the friction between the wheel and the axle

[C] Reduce the friction between the wheel and the axle

[D] None of the above