Sign convention

A scientist at NASA is closely inspecting the giant concave mirror at the heart of the Hubble telescope. He sees an upright, and magnified, virtual image of himself forming behind the mirror, as shown.

Choose the correct sign for each distance according to the sign conventions for mirrors.

	$(+)$ ‍	$(-)$ ‍
$Image distance$ ‍
$Focal length$ ‍
$Object height$ ‍

Related content

Video 10 minutes 10 seconds

Sign convention for mirrors (& lenses)

Video 8 minutes 31 seconds

Mirror formula, magnification formula, sign convention

Class 10 Physics (India)

Course: Class 10 Physics (India) > Unit 1

Problem