Advertisements
Advertisements
प्रश्न
Give reason for the following
The electric wire which sag in summer become straight in winter.
Advertisements
उत्तर
In summer the electric wire is expanded by high temperature. So it sags in summer. In winter die electric wire is contracted by low temperature. Hence it becomes straight in winter.
APPEARS IN
संबंधित प्रश्न
The temperature of a body rises by 1°C. What is the corresponding rise on the (a) Fahrenheit scale (b) Kelvin scale?
A body radiates out 300 calories of heat energy. How much heat energy is radiated out by the body in joules?
Which is more, a calorie or a joule?
Write the SI unit of coefficient of cubical expansion.
State three main characteristics of a thermometric substance.
Explain the following:
It is cool in the shade, when it is hot outside.
Consider the statement given below and choose the correct option.
Assertion: A system can be converted from one state to another state.
Reason: It takes place when the temperature of the system is constant.
Assertion: Temperature is the measure of heat energy.
Reason: Energy is the capacity to do work.
