Thursday, February 27, 2020

WBCS Polity and Constitution MCQs Prelims and Mains

Physics mcq questions for pmt | SSC | Rail | RRB | State PSC P18

Physics - 18

86. Solar energy is due to
(A) Nuclear fission reaction
(B) Chemical reaction
(C) Nuclear fusion reaction
(D) Burning of H2O

Correct Answer: [C] Nuclear fusion reaction.
87. A compound microscope has
(A) used to view only dead organisms.
(B) requires large room space.
(C) two lenses
(D) requires a UV light source

Correct Answer: [C] two lenses.
88. The value of acceleration due to gravity at higher altitudes
(A) Remains constant
(B) Increases
(C) Decreases
(D) None of the above

Correct Answer: [C] Decreases.
89. The atmospheric layers which reflect radio waves are called
(A) Stratosphere
(B) Troposphere
(C) Exosphere
(D) Ionosphere

Correct Answer: [D] Ionosphere.
90. The heat of the sun reaches us by
(A) Radiation
(B) Convection
(C) Conduction
(D) None of the above

Correct Answer: [A] Radiation.


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