Related Questions

The position of a heavenly body on the celestial sphere can be completely specified by
A Its altitude and azimuth
B Its declination and hour angle
C Its declination and right ascension
D All the above
The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called
A Visible horizon
B Sensible horizon
C Celestial horizon
D True horizon
The zenith is the point on the celestial sphere
A East of observer
B West of observer
C North of observer
D South of observer
The great circle along which the sun appears to trace on the celestial sphere with earth as centre during the year, is called
A Equator
B Celestial equator
C Ecliptic
D None of these
The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is
A Altitude and azimuth system
B Declination and hour angle system
C Declination and right ascension system
D Declination and altitude system
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.
A Equal to
B Less than
C Greater than
D None of these
Point A is 10 miles West of Point B. Point b is 30 miles North of pint C. Point C is 20 miles East of Point D. What is the distance (in miles) between Point A and Point D?
A 1010
B 1020
C 2010
D 3010
Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?
A 1020Km
B 1010Km
C 2010Km
D 3010Km
Despite an affected ----- which convinced casual observers that he was indifferent about his painting and enjoyed only frivolity, George cared deeply about his art and labored at it -------.
A nonchalance/diligently
B empathy/methodically
C gloom/intermittenly
D fervor/secretly
একটি ট্রেনের স্থির অবস্থায় দৈর্ঘ্য হলো 100 m। এটি অতি উচ্চ বেগে 80m দৈর্ঘ্যের একটি সুড়ঙ্গের মধ্য দিয়ে যায়। সুড়ঙ্গের দুই প্রান্তে অবস্থিত পর্যবেক্ষকরা লক্ষ করেন যে, একটি মুহূর্তে ট্রেনটির দৈর্ঘ্য ঠিক সুড়ঙ্গের দৈর্ঘ্যের সমান হয়। c এর এককে ট্রেন এর বেগ কত? (A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel. What is the velocity of the train expressed in units of c?)
A 0.866 c
B 0.333 c
C 0.5 c
D 0.6 c

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