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The energy reveived from the sun by the ...

The energy reveived from the sun by the earth and surrounding atmosphere is 2 cal`cm^(-2)` `min^(-1)` on a surface normal to the rays of sun.
Q. What is the total energy radiated, in J `min^(-1)`, by the sun to the universe? Distance of the sun from the earth is `1.49xx10^(11)`m.

A

`2.3444xx10^(28)J"min"^(-1)`

B

`2.33xx10^(24)J"min"^(-1)`

C

`2.34xx10^(20)J"min"^(-1)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
The area of surface surrounding sun at a distance equal to earth distance `4pid^2`
Energy raditad by sun (in J `"min"^(-1))` is
`2xx4.2[4pi(1.49)^2xx10^(26)]`J`"min"^(-1)`
`=2.3444xx10^(28)` J `"min"^(-1)`
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The energy received from the sum by earth and its surrounding atmosphere is 2 "cals"//cm^(2)//"min" on a surface normal to the rays of sun. (a) What is the total energy received in joules by earth and its atmosphere. (b) What is the total energy radiated in J/m by sun to the universe? Distance of sun to earth is .149xx10^(8) km. (c) At what rate in mega-grams per minute must hydrogen be consumed in the fusion reaction to provide the sun with the energy it radiate? Take mass of hydrogen atom-1.008145amu. Take mass of He atom=4.003874 amu.

The time period of Jupiter is 11.6 years. How far is Jupiter from the Sun? Distance of the Earth from the sun is 1.5xx10^(11)m

Knowledge Check

  • The energy reveived from the sun by the earth and surrounding atmosphere is 2 cal cm^(-2) "min" ^(-1) on a surface normal to the rays of sun. Q. What is the total energy received, in joule, by the earth and its atmosphere?

    A
    `10.645xx10^(18)J"min"^(-1)`
    B
    `10.645xx10^(15)J"min"^(-1)`
    C
    `8.645xx10^(17)J"min"^(-1)`
    D
    `9.645xx10^(14)J"min"^(-1)`

  • The energy reveived from the sun by the earth and surrounding atmosphere is 2 cal cm^(-2) "min"^(-1) on a surface normal to the rays of sun. Q. At what rate, in mega gram per minute, must hydrogen be consumed in fusion reaction to provide the sun with the energy it radiates? (Take mass defect per reaction to be 0.028706 a.m.u)

    A
    `3.66xx10^(14)` mega gram `min^(-1)`
    B
    `3.66xx10^(16)` mega gram `min^(-1)`
    C
    `3.66xx10^(-15)` mega gram `min^(-1)`
    D
    `3.66xx10^(10)` mega gram `min^(-1)`

  • The time period of jupiter is 11-6 year, how far is jupitor from the sun. Distance of earth from the sun is 1.5 xx 10^(11) m .

    A
    `4 xx 10^(11) m`
    B
    `7.68 xx 10^(11) m`
    C
    `9.11 xx 10^(11) m`
    D
    `2xx 10^(11) m`

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    The angular diameter of the sun is 1920". If the distance of the sun from the earth is 1.5xx10^(11) m, what is the linear diameter of the sun ?

    The total luminosity of the sun is 3.9xx10^(26)W . The mean distance of the sun from the earth is 1.496xx10^(11)m . Calculate the value of solar constant.

    A certain planet's year is 8 times the earth's year. Find the distance of this planet from the sun if the distance of the earth is 1 AU from the sun.

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