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For a satellite to apper satationery to ...

For a satellite to apper satationery to an observer on earth.

A

It must be rotating about the earth's axis

B

it must be rotating in the equatorial plane

C

Its angular velocity must be from west to east .

D

its time period must be 24 hours .

Text Solution

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The correct Answer is:
A, B, C, D
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Knowledge Check

  • For a satellite revolving around the earth

    A
    its P.E. and K.E. are +ve and the total energy is negative
    B
    its P.E. and K.E. are -ve but the total energy is positive
    C
    its P.E. and total energy are negative but the K.E. is positive
    D
    its P.E. and total energy are positive but its K.E. is negative

  • A satellite is projected with a velocity sqrt(1.5) times the orbital velocity just above the surface of earth. Initial velocity of the satellite is perpendicular to the surface of earth. The maximum distance of the satellite from surface of earth will be -

    A
    `2R_(e)`
    B
    `8R_(e)`
    C
    `4R_(e)`
    D
    `3R_(e)`

  • A geostationary satellite is at a height h above the surface of earth. If earth radius is R -

    A
    The minimum colatitude on earth upto which the satellite can be used for communication is `sin^(-1)(R//R+h)`
    B
    The maximum colatitudes on earth upto which the satellite can be used for communication is `sin^(-1)(R//R+h)`
    C
    The area on earth escaped from this satellite is given as `(2piR^(2)(1+sin theta))`
    D
    The area on earth escaped from this satellite is given as `(2piR^(2)(1+cos theta)`