Do you think all metals expand by the same amount when heated through the same temperature? What will happen when two different strips are joined together and heated to the same temperature? Where do you think this kind of arrangement is used? What is it called? Give full explanation.
Answers
Answer:
No,all metals does not expand at same amount when heated through the same temperature.When two different strips are joined one strip bends longer which gets heated up faster.These strips are often used in thermostats in houses to control house temperature. when the strip is cold it bends one way and as it gets hot it bends the other way.when a metal is heated the kinetic energy of that material increases and it's atoms and molecules move about more.In appliances this arrangement is used.This is a Bimetallic strip.
Answer:
No, all metals don't expand the same amount when heated.
Well, when two different strips are joined together and heated to the same temperature, as both the metals are of different nature, one of them will expand more than the other. Thus, one will observe that the strip of two metals to become curved that is the metal which has expanded more, will be on the outer curve while the inner curve will be constituted by the less expanded metal.
This kind of arrangement is commonly used in thermostats and in fire alarms.
It is called a bimetallic strip.
Hope this answer was helpful. Well wishes,
Oli.