General Science - Physics MCQs

Physics Objective (Multiple Choice) General Knowledge & General Science Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examinations.

81. What are the dimensions of Co-efficient of volume expansion?

[A] T-1 K-1
[B] M2 K-1
[C] K-1
[D] M1 K-2

Show Answer

82. Which of the following is true about an ideal gas, if Cp =molar specific heat capacities at constant pressure, Cp= molar specific heat capacities at constant volume and R is the universal gas constant?

[A] Cp + Cv = R
[B] Cp/ Cv = R
[C] Cp – Cv = R
[D] None of the above

Show Answer

83. What is the S.I. unit of power of a lens?

[A] metre
[B] watt
[C] dioptre
[D] second

Show Answer

84. What do we call the long-sightedness caused by loss of elasticity of the lens of the eye?

[A] Myopia
[B] Presbyopia
[C] Hypermetropia
[D] None

Show Answer

85. What is the property of a conductor to resist the flow of charges known as?

[A] Conductance
[B] Conductivity
[C] Resistance
[D] Electric Potential

Show Answer

86. Which of the following is an example of insulator?

[A] Diamond
[B] Mercury
[C] Iron
[D] Chromium

Show Answer

87. What is the total charge of the electric dipole?

[A] 0
[B] -1
[C] +1
[D] None of the above

Show Answer

88. What do we call the electrode that can be oxidized or reduced in half reaction?

[A] Inert electrode
[B] Active electrode
[C] Sleeping electrode
[D] Passive electrode

Show Answer

89. Which of the following is correct about EMF of a cell?

[A] it is the potential difference between the electrodes when current is flowing in the cell
[B] it is the drift velocity of the electrons when there is no current in the cell
[C] it is the potential difference between the electrodes when there is no current in the cell
[D] None of the above

Show Answer

90. What is the direction of current through external circuit in a galvanic cell?

[A] flows from cathode to anode
[B] flows from anode to cathode
[C] flows in both direction
[D] None of the above

Show Answer

Advertisement

Kindly help us to keep GKToday updated and error free. Use this form to report error or outdated information in questions. We shall rectify asap...