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Study Of The Sun - Questions and Answers

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1. Eleven year cycle refers to
A. the appearance of sunspots once in eleven years
B. life time of sunspots
C. period of variation in number of sunspots between two minima
D. period of variation in number of sunspots from maximum to minimum
Explanation:
2. Solar wind is produced from
A. photosphere
B. ionosphere
C. chromospheres
D. corona
Explanation:
3. Solar constant can be determined by the instrument called
A. pyrometer
B. pyroheliometer
C. thermopile
D. thermometer
Explanation:
4. Stars that suddenly attain large brightness and may be seen even during day time and slowly fades away are called
A. novae
B. comets
C. meteors
D. asteroids
Explanation:
5. The unit of solar constant is
A. Jm-2
B. Wm-2K-1
C. Wm-2
D. Jm-2K-1
Explanation:
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