Which of the following has the highest specific heat ?
copper
hydrogen
water
silver
The radiator of a car contains 20 litre of water. If the motor supplies calorie heat to it, then rise in temperature will be :
10o C
20o C
100o C
103 oC
Heat capacity of a body is infinite. It means
heat is given out
heat is taken in
no change in temperature whether heat is taken in or given out
All of these
A person weighing 60 kg taken in 2000 kcal diet in a day. If this energy were to be used in heating the person without any losses, what would be his rise in temperature ? (sp. heat of human body is 0.83 cal/gm/o C )
40.16o C
44.23o C
49.99o C
47.23o C
During constant temperature, we feel colder on the day when the relative humidity is
85%
60%
50%
25%
If the temperature of the sun is doubled, the rate of energy received on earth will be increased by a factor of
2
4
8
16
Calorimeters are made of which of the following ?
glass
metal
wood
either (a) or (b)
Water falls from a height of 500 m. What is the rise in temperature of water at the bottom if the whole energy is used up in heating water ?
0.96o C
1.02o C
1.16o C
0.25o C
What is the difference between the two principal specific heats of 1 g of helium gas at S.T.P. ? Given molecular weight of helium = 4 and J=4.186 J cal-1 and R=8.31 J mol-1 K-1 .
0.586 cal g-1 K-1
0.496 cal g-1 K-1
0.782 cal g-1 K-1
0.576 cal g-1 K-1
A black body has maximum wavelength λm at 2000 K. Its corresponding wavelength at 3000 K will be
