Physics - 18
86. Solar energy is due to
(A) Nuclear fission reaction
(B) Chemical reaction
(C) Nuclear fusion reaction
(D) Burning of H2O
(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
(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
(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
(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
(A) Radiation
(B) Convection
(C) Conduction
(D) None of the above
Correct Answer: [A] Radiation.
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