Air Expands on Heating|Wind Currents

Wind Currents|OMR

Solids expand on heating because

A solid expands upon heating because

Assertion : Wind pollination requires that the pollen grains are light and non-sticky. Reason : Light pollen grains can be transported easily in wind currents.

Which of the following statement are true (a) Rubber contracts on heating (b) Water expands on freezing (c) Waterr expands on heating from 4^(@)C to 40^(@)C

Heating Effects of current

What is meant by saying that 'air expands on heating'?

Why do solids expand on heating?

A carboard tube is wrapped with two winding of insulated wire wound in opposite directions as shown in Fig. 3.24. Terminal a and b of winding A may be connected to a battery through a reversing switch. State whether the induced current in the resistor R from left to right or from right to left in the following cicumstances. (a) The current in winding A is from a to b and is increasing. (b) The current in winding A is from b to a and is decreasing. ( c) The current in winding A is from b to a and is increasing.