If the diameters of the sun and the Earth are `1. 4\ x\ 10^9` metres and `1. 275\ x\ 10^7` metres respectively. Compare these two.

If the diameter of the Sun is 1.4xx10^9 m and that of Earth is 1.275xx10^4 km .Compare the two.

If the diameter of the Sun is 1.4xx10^(9)m and that of Earth is 1.275xx10^(4)km. Compare the two.

A satellite revolves round a planet in an elliptical orbit. Its maximum and minimum distance from planet are 1.5xx10^(7) metre and 0.5xx10^(7) metre respectively. If the speed of the satellite at the farthest point is 5xx10^(3)m//s . Calculate the speed at the nearest point.

The length of breadth of a rectangular plot are 5xx10^5 and 4xx10^4 metres respectively. Its area is _____

The distance of two planets from the Sun are 10^(13)and10^(12) metres respectively. The ratio of time periods of these two planets is:

The distance of two planets from the Sun are 10^(13)and10^(12) metres respectively. The ratio of time periods of these two planets is:

A walks 10 metres in front and 10 metres to the right. Then every time turning to his left, he walks 5, 15 and 15 metres respectively. How far is the now from his starting point ?

The diameter of the sun is 1.4 x 10^9m and its distance from the earth is 1.5 x 10^11 m . Find the radius of the image of the sun formed by a lens of focal length 20 cm.

A' walks 10 metres in front and 10 metres to the right. Then every time turning to his left, he walks 5, 15 and 15 metres respectively. How far is he now · from his starting point?