Question

The SI unit of Stefan’s constant is

Solution

Correct option is

 

From Stefan’s law, the total energy emitted per second by a unit area of a black body is proportional to the fourth power of its absolute temperature, i.e.,

                                       

                                     

Where  is the Stefan’s constant. Thus

                            

                                   

                                  

SIMILAR QUESTIONS

Q1

The unit of impulse is the same as that of

Q2

The SI unit of the universal gravitational constant G is

Q3

The dimension of the coefficient of thermal conductivity are

Q4

The  dimensions of energy per unit volume are the same as those of

Q5

The quantities L/R and RC (where L, C and R stand for inductance, capacitance and resistance respectively) have the same dimensions as those of

Q6

The dimensions of entropy are

Q7

What is the physical quantity whose dimensions are 

Q8

The dimensions of angular momentum are

Q9

The gravitational force F between two masses m1 and m2 separated by a distance r is given by  where G is the universal gravitational constant. What are the dimensions of G?