Which instrument is used for viewing the sun?
A. Stroboscope
B. Helioscope
C. Solograph
D. None of these
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A. Stroboscope
B. Helioscope
C. Solograph
D. None of these
A. metre
B. hertz
C. KW
D. KWH
A. China
B. United Kingdom
C. Russia
D. Canada
A. United States
B. United Kingdom
C. United Emirates
D. France
A. Elliptical
B. Highly elliptical
C. Circular
D. Parabolic
A. China
B. Brazil
C. New Delhi
D. None of these
A. USA
B. Canada
C. Bahamas
D. Cuba