Thermal Properties of Matter questions
823 published questions with worked solutions.
- Two hot bodies B_1 and B_2 are taken at temperatures 100°C and 80°C respectively at t = 0 and the temperature of the surrounding...
- A body cools in 7 minutes from 60°C to 40°C. Its temperature after the next 7 minutes is (temperature of the surroundings is 10°C)
- A body takes 4 minutes to cool from 100°C to 70°C, If the room temperature is 25°C, then the time taken to cool from 70°C to 40°C...
- A body cools from 50°C to 49.9°C in 5 s. The temperature of the surrounding is 30°C. How long will the body take to cool from...
- A body cools from 60°C to 52°C in five minutes. What will be further fall in temperature in the next five minutes? If the...
- A sphere and a cube of equal volumes both are made of iron and have similar surface. If both are heated to the same temperature...
- According to Newton's law of cooling, the rate of cooling of a body is proportional to ( )^n, where is the difference of the...
- The temperature of the sun cannot be found out by using:
- The concept of net loss or net gain of heat radiation by mutual exchange of radiation was put forth by :
- A cup of tea cools from 80°C to 60°C in one minute. The ambient temperature is 30°C. In cooling from 60°C to 50°C it will take:
- A body cools room 70°C to 50°C in 6 minutes. If the temperature of surrounding is 30°C, what is the temperature after 12 minutes?
- A body cools from 80°C to 60°C in one minute calculate the time in which the body cools from 60°C to 50°C, if the temperature of...
- The temperature of a solid falls from 77°C to 73°C in 3 minutes and from 73°C to 69°C in 4 minutes what is the temperature of the...
- Newton's law of cooling applies to :
- A body cools from 50.0°C to 49.9°C in 5 second. How long will it take to cool from 40.0°C to 39.9°C? (Assume the temperature of...
- A body cools from 60°C to 50°C in 10 minutes. If room temperature is 25°C and assuming Newton's law of cooling to hold good, the...
- In a room where the temperature is 30°C, a body cools from 61°C to 59°C in 4 minutes. The time taken by the body to cool from...
- Radiant energy from the sun strikes the earth at the rate of 1.4 10^3 watt/m^2. Then the temperature of the surface of the sun is...
- The ratio of energy of emitted radiation of black body at 27°C and 927°C is
- The present value of solar constant 'S' is 1340 W/m^2. If suddenly Earth's orbit around the Sun reduces by half of the present...
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