Advertisements
Advertisements
Question
In hot summer after a bath, the body’s __________.
Options
internal energy decreases
internal energy increases
heat decreases
no change in internal energy and heat
Solution
In hot summer after a bath, the body’s internal energy decreases.
APPEARS IN
RELATED QUESTIONS
A metal sphere cools at the rate of 4°C / min. when its temperature is 50°C. Find its rate of cooling at 45°C if the temperature of surroundings is 25°C.
The dimensions of emissive power are
Compute the temperature at which the r.m.s. speed of nitrogen molecules is 832 m/s. [Universal gas constant, R = 8320 J/k mole K, molecular weight of nitrogen = 28.]
1000 tiny mercury droplets coalesce to form a bigger drop. In this process, temperature of the drop _______ .
(A) increases
(B) may increase or decrease
(C) decreases
(D) does not change
Can the bulb of a thermometer be made of an adiabatic wall?
A spinning wheel is brought in contact with an identical wheel spinning at identical speed. The wheels slow down under the action of friction. Which of the following energies of the first wheel decreases?
(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal
When a solid melts or a liquid boils, the temperature does not increase even when heat is supplied. Where does the energy go?
Two tumblers of A and B have water at 50°C temperature. If the water from A and B is poured into tumbler C. The temperature of C is ______.
Two objects are said to be in thermal contact if they can exchange heat energy.
Heat is measured in Celsius or centigrade.
