Name the primary and secondary lymphoid organs.

The ratio of the turns in the primary and secondary coils of transformer is1: 9. The ratio of the current in the primary to secondary is

The number of turns in the primary and secondary coils of a transformer are 200 and 800 respectively. If the voltage developed across the secondary is 240V, then the potential difference across each turn of the primary will be

A transformer is used to reduce the main supply of 220 V to11 V. If the current in the primary and secondary coils are 5A and 90 A respectively, the efficiency of transformer is

The number of turns in primary and secondary coil of transformer are 1000 to 5000 and 90 V ac is applied to primary, hence the voltage at the secondary is

Between the primary and secondary rainbows, there is a dark band known as Alexander's dark band. This is because

A transformer with efficiency 80%works at 4 kW and 100 V.if the secondary voltage is 200V,then the primary and secondary currents are respectively

The stright line joining the sun and the observer along which centre of both the primary and secondary rainbow lies is called

What are primary and secondary sources of light ?

Differentiate between Primary and Secondary Metabolites.

Distinguish between primary cells and secondary cells.