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