Question

An object in placed in front of a
concave movior of focal length 20cm.The image
formed is 3 times the size
of object. Calculate two possible
distances of the object from the
mirror.​

Answer 1

Answer:

focal length= 20cm

R=f\2

=20\2

=10 cm

Answer 2

Answer:

f is equal to 20 cm.

image size is equal to 3time of object.