Question

The above two parts are kept in contact with each other as shown in the figure. The power of the combination will be:

Hint:

For lenses in contact, the combined power is the sum of their individual powers.

Answer 1

When two lenses are kept in contact, the total power of the combination is the algebraic sum of their individual powers. Since both parts have power \( P \), the total power is: \[ P_{\text{total}} = P + P = 2P \]