Question

The magnification produced by a spherical lens is $+2.5$. What is type of lens used and the nature of the image formed ? Assume a normal object.

• A. Concave, virtual and erect
• B. Convex, virtual and erect
• C. Convex, real and erect
• D. Concave, real and inverted

Answer 1

The correct option is B Convex, virtual and erect

The value of magnification given here is $2.5$.
When the image is virtual and erect then magnification is positive. When the image is magnified, it's magnitude is greater than 1.
Hence, it can be concluded that the image is virtual, erect and magnified. Such an image can be formed by a convex lens only.