The movement of the Earth around the Sun is known as
(i) rotation
(ii) Revolution
(iii) Inclination
1 Answers
Talk Doctor Online in Bissoy App
The earth is acted upon by gravitation of Sun, even though it does not fall into the Sun. Why?
The gravitational force is responsible for providing the necessary centripetal force
1 Answers 1 views
Comets move around the sun in highly elliptical orbits. The gravitational force on the comet due to the sun is not normal
Gravitational force is a conservative force. Since the work done by a conservative force over a closed path is zero, the work done by the gravitational force over every complete...
1 Answers 1 views
Among the following which planet takes maximum time for one revolution around the Sun?
(b) Jupiter takes maximum time for one revolution i.e., 11 year 86 days. Mars take 687 days, Venus takes 267 days.
1 Answers 1 views
Assertion (A): To orbit around the Sun the planet Mars takes lesser time than the time taken by the earth.
(d) A is incorrect as the mars revolution round the sun takes 1.88 years of Earth's revolution. The diametre of earth is 12,742 km (7,918 miles) and the mass is...
1 Answers 1 views
The tail of a comet is directed away from the sun because: (a) as the comet rotates around the sun,
(c) The radiation emitted by sun exerts a radial presssure on the comet. So the tail of comet is always directed away from the sun.
1 Answers 1 views
Who was the first man to say that the Earth is spherical and revolves around the sun?
(c) Pythagoras
1 Answers 1 views
The axis of rotation of the earth is tilted by 23.5° to the plane of revolution around the sun.
(c) At Mumbai the sun can come overhead, but it will never do so at Delhi
1 Answers 1 views
The correct sequence of the earth’s location on its orbit around the sun is (a) autumnal equinox, vernal equinox, summer solstice, winter solstice
(b) These sequence occurred in this sequence : 21 March, 21 June, 23 Sept. and 21 December.
1 Answers 1 views
Which of the following phenomenon is/are the effect of the rotation of the Earth? 1. Apparent movement of the Sun, the Moon and the Stars.
(d) All the given phenomena are the effect of the rotation of the earth. The Earth rotates from the west towards the east. As viewed from the North Star or...
1 Answers 1 views
Statement I : Sideral day is shorter than Solar day. Statement II : The motion of the Earth in its orbit around the Sun is termed as revolution.
(b) The sidereal day is the time it takes for the Earth to complete one rotation about its axis with respect to the ‘fixed’ stars. By fixed, we mean that...
1 Answers 1 views