search
arrow-left Previous
Next arrow-right
Q: The correct sign conventions for focal length (f) and radius of curvature (R) for the formation of images by spherical mirrors is:
  • A. for convex mirror f is negative, R is positive
  • B. for convex mirror f is negative, R is negative
  • C. for concave mirror f is positive, R is negative
  • D. for concave mirror f is negative, R is negative
Correct Answer: Option D - The correct sign conventions for focal length (f) and radius of curvature R for the formation of image by spherical mirror is - (i) for convex mirror is positive and ; is also positive. (ii) for concave mirror is negative and is also negative.
D. The correct sign conventions for focal length (f) and radius of curvature R for the formation of image by spherical mirror is - (i) for convex mirror is positive and ; is also positive. (ii) for concave mirror is negative and is also negative.

Explanations:

The correct sign conventions for focal length (f) and radius of curvature R for the formation of image by spherical mirror is - (i) for convex mirror is positive and ; is also positive. (ii) for concave mirror is negative and is also negative.