First slide

Conduction

Question

Consider the following statements.
(A) A man would feel iron or wooden balls equally hot at 37.4°C.
(B) At 37.4°C both iron and wood have same thermal conductivity.
Select the correct option.
(a) (A) is false but (B) is true.
(b) Both (A) and (B) are true.
(c) (A) is true but (B) is false.
(d) Both (A) and (B) are false.

Easy

A

Both (A) and (B) are true.
B

(A) is true but (B) is false.
C

(A) is false but (B) is true.
D

Both (A) and (B) are false.

Solution

A is TRUE. B IS FALSE.
At $37 . 4^{0} c m a n w i l l b e i n t h e r m a l e q u i l i b r i u m w i t h i r o n a n d w o o d e n b a l l s h e n c e b o t h w i l l n o t d r a w h e a t .$
Thermal conductivity will not vary with temperature.

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