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Light from the sun reaches the earth app...

Light from the sun reaches the earth approximately in `x xx 10^2` sec, where x is :

Text Solution

Verified by Experts

The correct Answer is:
5
`t = (s)/(c ) = (1.5xx10^(11)(m))/(3xx10^8(m//s)) = 0.5xx10^3 s`
`=5xx10^2s.`
:. X =5
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Knowledge Check

  • Light from the Sun reaches us in nearly

    A
    8 min
    B
    2 min
    C
    6 min
    D
    4 min

  • The heat from the sun reaches us on the earth by the process of :

    A
    conduction
    B
    radiation
    C
    convection
    D
    none of these

  • Consider the sun as a black body of radius 7 xx 10^8 m and the earth receiving its surface radiations from the sun at a rate of approximately 1500 W//m^2 . If the distance of the centre of the sum from the earth's surface is 15 xx 10^10 m, then the surface temperature of the sun is

    A
    4990.5 K
    B
    5706.8 K
    C
    5903.7K
    D
    6063.4 K