Question

when object is placed as infinity in cancave mirror​

Answer 1

Answer:

Object at infinity:

Since parallel rays coming from the object converge at principal focus, F of a concave mirror; after reflection. Hence, when the object is at infinity the image will form at F.

Answer 2

Answer:

Object at infinity:

Since parallel rays coming from the object converge at principal focus, F of a concave mirror; after reflection. Hence, when the object is at infinitythe image will form at F.

Hope this helps you!!