Question

A point object is placed at a distance of 30 cm from a convex mirror of focal length 30 cm the image will form at .
a) infinity
b)focus
c)pole
d)15 cm behind the mirror

Answer 1

hello friend...!!!

• The answer is option ( A) , the image will be formed at infinity.

• it is because, according to the question the object distance = 30 cm and focal length is 30 cm

here, both the object distance and the focal length coincides therefore it refers that the object is placed at the focus.

• when an object is placed at focus in a convex mirror the image formation will be at ' infinity ' .


___________________________________


Hope it is useful...!!

Answer 2

I think (a) infinity