Analysis of the sun's spectrum shows that the wave length of maximum intensity is `4750 A^@`. Taking Wien's constant as `2.9 xx 10^-3 mk`, find the surface temperature of the sun.

If the wavelength corresponding to maximum energy radiated from the moon is 14 micron , and Wien 's constant is 2.8 xx 10^(-3) m K , then temperature of moon is

If the surface temperature of the sun is assumed to be 6150 K, find the wave length of maximum intensity in the sun’s radiation taking Wien's constant 2.88 xx 10^-3mk .

The light from the sun is found to have a maximum intensity near the wavelength of 470 nm. Assuming the surface of the sun as a black body, the temperature of the sun is

If the period of a wave is 2 times 10^-3 s, find the frequency of the wave.

The surface temperature of a black body is 1200 K. What is the wavelength corresponding to maximum intensity of emission of radiation if Wien's constant b = 2.892 xx 10^-3 mk ?

The wavelength of maximum energy released during an atomic axplosion was 2.93xx10^(-10)m . Given that Wien's constant is 2.93xx10^(-3)m-K , the maximum temperature attained must be of the order of

If lambdam for solar radiation is 4753A^@ , estimate the surface temperature of the sun. Wien's constant, b = 0.2893 cmk.

What is the peak wavelength of radiation emitted by a black body at temperature 40^@C (b = 2.898 xx 10^-3 mK )

The intensity of radiation emitted by the sun has its maximum value at a wavelength of 510 nm and that emitted by the North star has the maximum value at 350 nm. If these stars behave like black bodies, then the ratio of the surface temperatures of the sun and the north star is

A 60 watt filament lamp loses all its energy by radiation from its surface. The emissivity of the surface is 0.5. The area of the surface is 5 xx 10^-5m^3 . Find the temperature of the filament ( sigma = 5.67 xx 10^-8m^2s^-4K^-4 )