Lakhmir Singh and Manjit Kaur Solutions for Chapter: Reflection of Light, Exercise 16: Very Short Answer Type Questions

According to the "New Cartesian Sign Convention" for mirrors, what sign (Positive or Negative) has been given to the focal length of a convex mirror?

Which type of mirror has positive focal length?

(Choose from the following: Convex mirror/ Concave mirror)

Which type of mirror has negative focal length?

What is the nature of a mirror having a focal length of, $+10 \mathrm{cm}$?

What kind of mirror can have a focal length of, $-20 \mathrm{cm}$. (Choose from: Concave/ Convex/ Plane)

All the distances are measured from the _____ of a spherical mirror.

What sign ($+ve$ or $-ve$) has been given to the following on the basis of Cartesian Sign Convention?

Height of a real image.

What sign (positive or negative) has been given to the following on the basis of Cartesian Sign Convention?
Height of a virtual image.