Question

4. At what position of the object does a convex lens act as a magnifying glass?
a. between F and 2F
c. beyond F
b. between F and O
d. beyond 2F
​

Answer 1

$\mathtt{\huge{\underline{\bf{\red{Answer :-}}}}}$

➝ Option.C) between F and O.

Between F & O the object does a convex lens act as a magnifying glass.

At this point image formed

• Virtual
• Erect
• Greater than size of object.

Convex lens :-

It is also known as a converging lens.

• It is thicker at the centre than at the edges.

• It converges a parallel beam of light on refraction through it.

• It has a real focus.

Types of convex lenses:-

• Double convex or biconvex lens. In this lens, bothsurfaces are convex.

• Planoconcave lens in which, one side is convex and the other is plane.

• Concavoconvex is convex by one side and the other is concave.

______________________________________

Answer 2

Answer:

b. between F and O

Explanation: