1) The radiation takes place
a. through molecular communication
b. through vacuum
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: through vacuum
Explanation:
No explanation is available for this question!
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2) What is the relation between reflectivity (ρ), absorptivity (α) and transmissivity (τ)?
a. ρ – α + τ = 1
b. ρ + α – τ = 1
c. ρ + α + τ = 1
d. ρ – α – τ = 1
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Answer
Explanation
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ANSWER: ρ + α + τ = 1
Explanation:
No explanation is available for this question!
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3) The emissivity (ε) can be defined as the ratio of
a. emissive power of real body to the emissive power of black body
b. emissive power of black body to the emissive power of real body
c. reflectivity of real body to emissive power of black body
d. reflectivity of black body to emissive power of real body
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Answer
Explanation
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ANSWER: emissive power of real body to the emissive power of black body
Explanation:
No explanation is available for this question!
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4) The radiation from fusion of hydrogen
a. can be achieved on earth's surface
b. cannot be achieved on earth's surface
c. can be achieved on earth's surface at high maintained temperature
d. unpredictable
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Answer
Explanation
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ANSWER: cannot be achieved on earth's surface
Explanation:
No explanation is available for this question!
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5) The rate at which the solar energy reaching the earth's atmosphere is called as
a. solar constant
b. radiation constant
c. electromagnetic constant
d. atmospheric constant
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Answer
Explanation
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ANSWER: solar constant
Explanation:
No explanation is available for this question!
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6) The radiation energy from the sun is produced by
a. fission reaction
b. fusion reaction
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: fusion reaction
Explanation:
No explanation is available for this question!
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7) How is the cooling at night in coastal areas?
a. the day temperature reduces rapidly at night in coastal areas
b. the day temperature reduces slowly at night in coastal areas
c. the day temperature and a night temperature in coastal areas are similar
d. unpredictable
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Answer
Explanation
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ANSWER: the day temperature reduces slowly at night in coastal areas
Explanation:
No explanation is available for this question!
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8) In desert areas, there is large difference between day and night temperatures mainly because of
a. presence of carbon dioxide in air as it acts as barrier for emanating infrared radiation from the earth surface
b. presence of water vapour in air as it acts as barrier for emanating infrared radiation from the earth surface
c. absence of carbon dioxide in air as it acts as barrier for emanating infrared radiation from the earth surface
d. absence of water vapour in air as it acts as barrier for emanating infrared radiation from the earth surface
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Answer
Explanation
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ANSWER: absence of water vapour in air as it acts as barrier for emanating infrared radiation from the earth surface
Explanation:
No explanation is available for this question!
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9) Which of the following gases is/are responsible for global warming?
a. Carbon dioxide (CO 2)
b. Water vapour (H 2O)
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: both a. and b.
Explanation:
No explanation is available for this question!
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10) How is the greenhouse effect experienced on earth?
a. global worming
b. pollution
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: global worming
Explanation:
No explanation is available for this question!
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