Question

At the focal point of a converging lens, the object:

Answer 1

Answer:

D) Image cannot be seen

Explanation:

As we know by lens formula

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

now we know that

object is placed at the focal point of lens

$d_o = f$

so we will have

$\frac{1}{d_i} = 0$

so the image will form at infinite

so image will be at infinite distance from the lens

so it cannot be seen

Answer 2

Answer:

D. cannot be seen

Explanation: