NEET Physics: Questions 1444 - 1447 of 2099
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Question number: 1444
A cylindrical rod with one end in a steam chamber and its other end in ice results in melting of 0.1 gm of ice per second. If the rod is replaced by another with half the length and double the radius of the first and if the thermal conductivity of material of second rod is ¼ that of firth, the rate at which ice melts in gm/sec will be
Question number: 1445
One mole of an ideal gas expands at a constant temperature of 200 K from an initial volume of 10 litres to a final volume of 20 litres. The work done in expanding the gas is
(R = 8.31 J/mole-K)
Question number: 1446
Question number: 1447
The equivalent thermal conductivity of two plates of same thickness in contact (series) is less than the smaller value of thermal conductivity.
For two plates of equal thickness in contact (series) the equivalent thermal conductivity is given by
|a.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
|b.||Ꭺ is true but Ꭱ is false|
|c.||Both Ꭺ and Ꭱ are false|
|d.||Ꭺ is false but Ꭱ is true|