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Question
(a)Though moon is a natural satellite, but it can be used for communication purposes.give reasons.
(b) light travels with a speed of 3×10 power 8 m/s in vaccine. Sunlight takes 8.3 minutes to reach the earth. Calculate the distance between the earth and the sun
(a)Though moon is a natural satellite, but it can be used for communication purposes.give reasons.
(b) light travels with a speed of 3×10 power 8 m/s in vaccine. Sunlight takes 8.3 minutes to reach the earth. Calculate the distance between the earth and the sun
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Solution
1.Moon is a natural satellite of the earth. But, it cannot be used as a communication satellite because of the following reasons:
(i) It is very far away from earth.
(ii) Its orbital time period is 27.3 days, which is too long.
(iii) It has neither equitorial
orbit nor polar orbit which makes a satellite useful for different purposes.
2.Sunlight reaches Earth in 8.3 minutes. So the distance between Earth and Sun is 8.3 light minutes.
1.Moon is a natural satellite of the earth. But, it cannot be used as a communication satellite because of the following reasons:
(i) It is very far away from earth.
(ii) Its orbital time period is 27.3 days, which is too long.
(iii) It has neither equitorial
orbit nor polar orbit which makes a satellite useful for different purposes.
2.Sunlight reaches Earth in 8.3 minutes. So the distance between Earth and Sun is 8.3 light minutes.
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