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According to Kepler , planets move in...

According to Kepler , planets move in

A

Circular orbits around the sun

B

Eliptical orbits around the sun with sun at exact centre .

C

Straight lines with constant velocity

D

Eliptical orbits around the sun with sun at one of its foci

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • According to Kepler's law of planetary motion, if T represents time period and r is orbital radius, then for two planets these are related as

    A
    `((T_(1))/(T_(2)))^(3//2)=(r_(1))/(r_(2))`
    B
    `(T_(1))/(T_(2))=[(r_(1))/(r_(2))]`
    C
    `[(T_(1))/(T_(2))]^(2)=[(r_(1))/(r_(2))]^(3)`
    D
    `(T_(1)^(2))/(T_(2))=(r_(1)^(3))/(r_(1))`

  • According to Kepler’s law the time period of a satellite varies with its radius as

    A
    `T^(2) prop R^(3)`
    B
    `T^(3) prop R^(2)`
    C
    `T^(2) prop (1//R^(3))`
    D
    `T^(3) prop (1//R^(2))`

  • According to Kepler's second law, line joining the planet to the sun sweeps out equal areas in equal time intervals. This suggests that for the planet

    A
    radial acceleration is zero
    B
    tangential acceleration is zero
    C
    transverse acceleration is zero
    D
    All

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    According to Kepler's first law, the orbit of a planet is …………………… with the sun at one of the ………………..

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