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The graph, shown in the adjacent diagram...

The graph, shown in the adjacent diagram, represents the variation of temperature (T) of two bodies, x and y having same surface area, with time (t) due to the emission of radiation. Find the correct relation between the emissivity and absorptivity power of the two bodies

A

`e_(x) gt e_(y)" & " a_(x) lt a_(y)`

B

`e_(x) lt e_(y) " & " a_(x) gt a_(y)`

C

`e_(x) gt e_(y) " & " a_(x) gt a_(y)`

D

`e_(x) lt e_(y) " & " a_(x) lt a_(y)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The graph shown in the adjacement diagram represents the variation of temperature (T) of two bodies x and y having the same surface area, with time (t). Both of these bodies lose heat only due to the emission of radiation. Find the correct relation between the emissive and absorptive power of the two bodies.

    A
    `E_(x) gt E_(y) and a_(x) lt a_(y)`
    B
    `E_(x) lt E_(y) and a_(x) gt a_(y)`
    C
    `E_(x) gt E_(y) and a_(x) gt a_(y)`
    D
    `E_(x) lt E_(y) and a_(x) lt a_(y)`

  • Two bodies A and B having equal surface areas are maintained at temperatures 10^(@)C . And 20^(@)C . The thermal radiation emitted in a given time by A and B are in the ratio

    A
    `1:1.15`
    B
    `1:02`
    C
    `1:04`
    D
    `1:16` .

  • If the rate of emission of radiation by a body at temperature TK is E then graph between log E and log T will be .

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