Question

A black body which is at a temperature of TK thermal radiation emitted at the rate of E W/m^2. If the temperature falls to T/4K the thermal radiation emitted in W/m^2 will be
1.E
2.E/4
3.E/64
4.E/256​

Answer 1

Answer:

In these type of function ratio finding q where ratio btw variable/s given .

• Know abt formula, concept,law used
• Put variables
• Put the variable in terms of initial(as given) to find value of function at value
• Divide values to find relation btw 2, value of one in terms of other.

Here, E=sigmaAT^4

Keeping all fixed ,putting T/4 in place of T as E, T are variables notated by these alphabets, we get

E final =c(T/256)