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The mean distance of sun from the earth ...

The mean distance of sun from the earth is `1.5xx10^8km`. The time taken by light to reach earth from the sun is

A

`0.12min`

B

`8.33min`

C

`12.5min`

D

`6.25min`

Text Solution

Verified by Experts

The correct Answer is:
B
`t=d/c=(1.5xx10^8xx10^3)/(3xx10^8)=500sec`
`=(500)/(60)=(50)/(6)=8.3min`
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Knowledge Check

  • The distance of a galaxy from the earth is of the order of 10^(25)m . The time taken by light to reach the earth from the galaxy is

    A
    `3xx10^(14)s`
    B
    `3xx10^(16)s`
    C
    `3xx10^(18)s`
    D
    `3xx10^(20)s`

  • The average distance from the sun to earth is,

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    150 million kilometers
    B
    57.8 million km
    C
    227.9 mkm
    D
    778.2 mkm

  • If the distance between the sun and the earth is 1.5xx10^(11) m and velocity of light is 3xx10^(8) m//s , then the time taken by a light ray to reach the earth from the sun is

    A
    500 s
    B
    500 minutes
    C
    50 s
    D
    `5xx10^(3)s`

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