Question

Which of the following statement is incorrect with regard to sign convention for a spherical mirror?

• A. All the distances are measured from the pole.
• B. The direction of incident ray is chosen to be positive.
• C. The direction opposite to the incident ray is chosen to be negative.
• D. The direction of the incident ray is chosen to be negative.

Answer 1

The correct option is D The direction of the incident ray is chosen to be negative.

As per the sign convention, the direction of the incident ray is chosen to be positive and the direction opposite of it is chosen as negative.