What sign (+ve or −ve) has been given to the following on the basis of Cartesian Sign Convention?(a) Height of a real image.(b) Height of a virtual image.

(b) A positive sign $(+)$ is given to the height of a virtual image.

Explanation

A real image is always formed below the principal axis, whereas a virtual image is always formed above the principal axis. 

Therefore, according to the Cartesian sign convention, the image formed below the axis or downwards,  it's given a negative sign, whereas the image formed above the axis or upwards, it's given a positive sign.

Tutorialspoint

Updated on: 10-Oct-2022

435 Views

Kickstart Your Career

Get certified by completing the course

Get Started