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.

131. How can a moving coil galvanometer be converted into a ammeter?

[A] by introducing shunt resistance in parallel
[B] by introducing shunt resistance in series
[C] by introducing large resistance in series
[D] None of the above

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132. What do we call the material which gets strongly magnetised when placed in an external magnetic field?

[A] Pyromagnetic
[B] Ferromagnetic
[C] Paramagnetic
[D] Diamagnetic

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133. What are the lines joining places of zero declination known as?

[A] Isoclinic
[B] Agonic
[C] Aclinic
[D] Isogonic

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134. What is the relationship between the magnetisation of a paramagnetic material and the absolute temperature?

[A] they are directly proportional to each other
[B] they are inversely proportional to each other
[C] they are independent of each other
[D] None

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135. What do we call the atomic species of the same element differing in mass?

[A] Isobars
[B] Isotopes
[C] Isomers
[D] Such species don’t exist

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136. Which of the following gives us the mass number of an atom?

[A] total number of electrons
[B] total number of neutrons
[C] total number of nucleons
[D] None of the above

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137. What is the source of energy in nuclear reactors which produce electricity?

[A] Nuclear Fission
[B] Nuclear Fusion
[C] Gamma decay
[D] None of the above

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138. What is the energy equivalence of one atomic mass unit?

[A] 93.125 eV
[B] 931.25 eV
[C] 9.31 eV
[D] 0.93125 eV

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139. What do we call the phenomenon of spontaneous disintegration of the nucleus of an atom?

[A] Nuclear Fusion
[B] Ionisation
[C] Radioactivity
[D] Covalent Bonding

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140. Which of the following is a commonly used moderator in a Nuclear reactor?

[A] Heavy water
[B] Graphite
[C] Water
[D] All of the above

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