Physics MCQ for Competitive Exams [Set-5]

[MCQ 41] Which instrument is used to measure the atmospheric pressure?

[A] Hygrometer
[B] Barometer
[C] Thermometer
[D] picometer

[Answer]

[B] Barometer

[MCQ 42] The theory of thermal ionization is published by

[A] S.N Bose
[B] Albert Einstein
[C] Meghnad Saha
[D] Rutherford

[Answer]

[C] Meghnad Saha

[MCQ 43] What is the value of absolute temperature in Fahrenheit scale?

[A] 0° F
[B] − 273° F
[C] − 459.67° F
[D] − 373° F

[Answer]

[C] − 459.67° F

[MCQ 44] In which direction the frictional force acts?

[A] along the direction of motion of the particle
[B] opposite to the direction of motion of the particle
[C] perpendicular to the direction of motion of the particle
[D] in any direction

[Answer]

[B] opposite to the direction of motion of the particle

[MCQ 45] Which of the following is not a magnetic material?

[A] Fe
[B] Ni
[C] Co
[D] Zn

[Answer]

[D] Zn

[MCQ 46] Kinetic energy converts into electric energy in

[A] Transformer
[B] Dynamo
[C] Motor
[D] Battery

[Answer]

[B] Dynamo

[MCQ 47]

[A]
[B]
[C]
[D]

[Answer]

Φ_p = sin^–1 [n₂/n₁]