Question

Sunlight of intensity 1.3 kWm⁻² is incident normally on a thin convex lens of focal length 20 cm. Ignore
the energy loss of light due to the lens and assume that the lens aperture size is much smaller than its focal
length. The average intensity of light, in kW m⁻², at a distance 22 cm from the lens on the other side
is __________.

Answer 1

Answer:

Explanation: hi haaa aa a a a nahi ii ii