GravitationMedium
Question
The different in the legh of a mean solar day and a siaereal day is about :
Options
A.1minute
B.4minute
C.15minute
D.56minute
Solution
Solar day is the time taken by earth to complete one rotation about its axis withrespect to sun. Sidereal day is the time taken by earth to complete one rotation about its axis with respect to distant to disant star. There is a different of 4 minutes between solar day and sidereal day. Solar day is longer as earth has to rotate greather angle to attain same position with respect to sun due to its own motion (revolution) round the sun. its position with respect to distant star remains almost fixed.
Create a free account to view solution
View Solution FreeMore Gravitation Questions
Two point objects of masses m and 4m are at rest at an infinite separation. They move towards each other under mutual gr...A satellite with kinetic energy Ek is revolving round the earth in a circular orbit. How much more kinetic energy should...Which of the following most closely depicts the correct variation of the gravitation potential V(r) dueto a large planet...Suppose, the acceleration due to gravity at the Earth′s is 10 ms-2 and at the surface of Mars it is 4.0 ms-2. A 60...The magnitudes of gravitational field at distance r1 and r2 from the centre of a uniform sphere of radius R and mass M a...