From the data given below calculate the black body temperature of the sun:
$straight sigma equals 5.67 cross times 10 to the power of negative 8 end exponent straight J divided by straight m squared sK to the power of 4 space space space space space space space space space space space space space space space straight S equals 1340 space straight J divided by straight m squared straight s$
Radius of the sun = $7 cross times 10 to the power of 8 straight m$
Radius of the earth's obrit $equals 1.5 cross times 10 to the power of 11 straight m$

Solution

The surface temperature of sun is given by,
$straight T equals fourth root of fraction numerator straight R squared straight S over denominator σr squared end fraction end root$
Putting the values, we get
$Temperature comma space straight T equals fourth root of fraction numerator left parenthesis 1.5 cross times 10 to the power of 11 right parenthesis squared 1340 over denominator left parenthesis 5.67 cross times 10 to the power of negative 8 end exponent right parenthesis left parenthesis 7 cross times 10 to the power of 8 right parenthesis squared end fraction end root space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 570 straight K$

Some More Questions From Mechanical Properties of Fluids Chapter

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Mechanical Properties Of Fluids

Some More Questions From Mechanical Properties of Fluids Chapter

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

Write down the expression for the instantaneous velocity and acceleration of particle vibrating in simple harmonic motion.

How do you define the mean position of particle executing simple harmonic motion?

Define amplitude.

What is the net displacement of the particle executing simple harmonic motion in one complete oscillation?

Are all the periodic motions simple harmonic?

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Mechanical Properties Of Fluids

From the data given below calculate the black body temperature of the sun:Radius of the sun = Radius of the earth's obrit

Some More Questions From Mechanical Properties of Fluids Chapter

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

Write down the expression for the instantaneous velocity and acceleration of particle vibrating in simple harmonic motion.

How do you define the mean position of particle executing simple harmonic motion?

Define amplitude.

What is the net displacement of the particle executing simple harmonic motion in one complete oscillation?

Are all the periodic motions simple harmonic?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation