Question

Collect the information about the lenses available in an optical shop. Find out how the focallength of a lens may be determined by the given ‘power’ of the lens.

Answer 1

Answer:

Explanation:

Power is reciprocal of the wavelength, hope you understood

Answer 2

★ Question :

Collect the information about the lenses available in an optical shop. Find out how the focallength of a lens may be determined by the given ‘power’ of the lens.

$\rule{200}{2}$

★ Explanation :

The power of the lens is the reciprocal of the wavelength. When power decreases wavelength also decreases because power is directly proportional to the wavelength.

→ Power = 1/Wavelength