Question

According to Cartesian sign convention, in ray optics

• A. all distances are taken positive
• B. all distances are taken negative
• C. all distances in the direction of incident ray are taken positive
• D. all distances in the direction of incident ray are taken negative

Answer 1

Answer: (C)

all distances in the direction of incident ray are taken positive

Answer 2

According to cartesian sign convention, in ray optics all distance in the direction of incident ray are taken positive