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A huge circular arc of length 4.4 ly sub...

A huge circular arc of length `4.4` ly subtends an anlge '4s' at the centre of the circle. How long it would take for a body to complete 4 revoluation if its speed is 8AU per second ?
Given : `1 ly =9.46xx10^(15)m`
`1AU=1.5xx10^(11)m`

A

`7.2xx10^(8)s`

B

`4.1xx10^(8)s`

C

`3.5xx10^(6)s`

D

`4.5xx10^(10)s`

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Knowledge Check

  • If a particle moves with a speed of 1.5 xx 10^(8) m/s then the ratio of its mass to its rest mass is

    A
    1.155
    B
    11.55
    C
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    D
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