Advertisements
Advertisements
प्रश्न
Why does a substance expand on heating?
Advertisements
उत्तर
A substance is made up of molecules arranged in a lattice. On heating, the molecules vibrate faster in the lattice and bump into each other harder. So the distance between the molecules increases thus expanding lattice. Thus, the substances expand on heating.
APPEARS IN
संबंधित प्रश्न
When a substance having mass 3 kg receives 600 cal of heat, its temperature increases by 10∘C. What is the specific heat of the substance?
Who am I?
I make things hot or cold.
Define one joule of heat.
Write the SI unit of coefficient of cubical expansion.
Do all substances expand on heating? Give examples.
Is conduction possible in gases?
Name three devices which are used to detect heat radiations.
A small gap is left between two iron rails of the railway track. Why?
1 calorie equals ______.
