At `127^(@)C` radiates energy is `2.7 xx 10 J//s`. At what temperature radiated energy is `4.32 xx 10 J//s`

At 127^(@)C radiated energy is 2.7 xx 10^(-3) J//s . At what temperature radiated energy is 4.32 xx 10^(6) J//s

A black body radiates energy at the rate of 1 xx 10 J // s xx m at temperature of 227 ^(@)C , The temperature to which it must be heated so that it radiates energy at rate of 1 xx 10 J//sm , is

A black body at 127^(@)C emits the energy at the rate of 10^(6)J//m^(2) s the temperature of a black body at which the rate of energy emission is 16 xx 10^(6)J//m^(2)s is .

A sphere of radius 50 cm is maintained at a constant temperature, radiates energy at the rate of 0.5 kcal/s. then the emissive power of sphere is ( J=4.2xx10^(3)J//kcal )

In a photoelectric effect experiment, the kinetic energy of an emitted electron is 1.986 xx 10^(-19) J , when a radiation of frequency 1.0 xx 10^15 s^(-1) hits the metal. What is the threshold frequency of the metal (in s^(-1) )?(Planck's constant = 6.62 xx 10^(-34) Js)

Sun radiates energy at the rate of 3.6xx10^(26)J//s . The rate of decrease in mass of sun is (Kgs^(1)) .

The frequency of a radiation is 6 xx 10^14 Hz. Calculate the energy per photon of this radiation (h = 6.24 xx 10^-34J.S)