A comet moves in a parabolic orbit with the sun as focus, when the comet is `2 xx 10^7 K.M` from the sun, the line from the sun to it makes an angle `pi/2` with the axis of the orbit. Find how near the comet comes to the sun.

A comet moves in a parabolic orbit with the sun as focus,when the comet is 2xx10^(7)K.M from the sun,the line from the sun to it makes an angle (pi)/(2) with the axis of the orbit.Find how near the comet comes to the sun.

Most of the comets moving round the sun have orbits of the shape of

Most of the comets moving round the sun have orbits of the shape of

A comet is in highly elliptical orbit around the Sun. The period of the comet's orbit is 90 days. Some statements are given regarding the collision between the comet and the earth. Mark the correct statement. [Mass of the Sun = 2 xx 10^(30) kg , mean distance between the earth and the Sun = 1.5 xx 10^(11)m .]

A comet is in highly elliptical orbit around the Sun. The period of the comet's orbit is 90 days. Some statements are given regarding the collision between the comet and the earth. Mark the correct statement. [Mass of the Sun = 2 xx 10^(30) kg , mean distance between the earth and the Sun = 1.5 xx 10^(11)m .]

What happens to the tail of a comet when it moves far away from the sun ?

The tail of a comet points away from the Sun due to

A comet of mass m moves in a highly elliptical orbit around the sun of mass M the maximum and minium distacne of the comet from the centre of the sun are r_(1) and r_(2) respectively the magnitude of angular momentum of the comet with respect to the centre of sun is