Related Questions

For any star to be a circumpolar star, its
A Declination must be 0°
B Declination must be 90°
C Distance from the pole must be less than the latitude of the observer
D Hour angle must be 180°
A triangle has a base x and an altitude y. A second triangle has a base twice the altitude of the first triangle, and an altitude twice the base of the first triangle. What is the area of the second triangle?
A 2xy
B 0.5xy
C 0.66xy
D 4xy
Circumpolar stars
A Rotate round the North Pole
B Rotate round the celestial pole
C Remain always above the horizon
D Are seldom seen near the pole star
The patriot is the star of the country. Here the 'star' is used as a/an-
A smile
B metaphor
C allegory
D personification
A hat contains 12 cards marked with a star and 18 unmarked cards. What is the probability that one card slelected at random will be marked with a star?
A 3/5
B 2/5
C 2/3
D 5/2
If one star equals four circle and three circles equal four diamonds, then what in the ratio of star to diamond?
A 14:3
B 16:3
C 17:3
D 19:3
The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
A Horizon and equator
B Equator and zenith
C Zenith and pole
D Pole and horizon
The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between
A Horizon and equator
B Zenith and pole
C Equator and zenith
D Pole and horizon
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by
A sin H = tan φ . cot δ
B cos H = tan φ . cot δ
C tan H = tan φ . cot δ
D None of these
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by
A sin z = sec φ . cos δ
B cos z = sec φ . cos δ
C tan z = sec φ . cos δ
D None of these

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