Question

Which of the following is inadequate to determine the magnification by a spherical w mirror?
A. Height of the object and height of the image.

B. Object distance and image distance.

C. Object distance and radius of curvature.

D. Focal length and radius of curvature​

Answer 1

Answer:

Height of the object and height of the image.

Explanation:

here is your correct answer

Answer 2

Answer:

D) Focal Length and radius of curvature

Explanation:

We calculate the magnification of a spherical mirror by the formula

m = $\frac{h(o)}{h(y)}$ = $\frac{v}{u}$ where h(o) is height of image and h(y) is height of object , and v is the distance of the image from the mirror and distance of the object from the mirror

Now , we can calculate the image distance using object distance and radius of curvature ( focal length = radius of curvature / 2 and apply mirror formula)

But in Option (D) there is not much adequate information about the object distance or the image distance , or the height of either two , therefore option (D) is the answer