Advertisements
Advertisements
प्रश्न
The hot metal ball is suspended from a string in a metal box as shown in the following figure
(i) What are the ways in which the ball loses heat
(ii) Which side of the box will be the hottest and which the least hot after some time? Explain.
Advertisements
उत्तर
(i) As the ball is suspended in the air there is no material medium present around the ball, it will not lose heat by the process of conduction of convection. The ball will lose heat by the process of Radiation only.
(ii) The speed of heat radiation is equal to the speed of light and intensity of heat radiation does not depend upon direction so all sides of the box would be equally hot as the box is cubical.
APPEARS IN
संबंधित प्रश्न
What is the Kelvin scale of temperature?
What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?
Fill in the blank with the correct word, from the words in option:
All the temperature on the kelvin scale are in ____ figures.
Why does a piece of ice when touched with hands appear cold?
Name three devices which are used to detect heat radiations.
A copper wire 10 cm long is heated from 200C to 300C. Find the increase in length of the wire, if coefficient of linear expansion of copper is 1.7 X 10-5oC-1
Complete the following sentence:
SI unit of temperature is ______
Who am I?
I get heated due to the land or water near me
Temperature measures the ______ kinetic energy of molecules.
When we cool the object the temperature of the object will be increased.
