Answer is (D)
When and changes to is and
A black rectangular surface of area ‘A’ emits energy ‘E’ per second at . If length and breadth are reduced to rd of initial value and temperature is raised to then energy emitted per second becomes
A)
B)
C)
D)
A)
B)
C)
D)
A black rectangular surface of area ‘A’ emits energy ‘E’ per second at . If length and breadth are reduced to rd of initial value and temperature is raised to then energy emitted per second becomes
A)
B)
C)
D)
A)
B)
C)
D)