Question

25. State the term used for

a) The line that joins the centre of curvature of the two surfaces of a lens.

b) Name the type of lens that can be used as a reading glass.

c) Draw a ray diagram when the object is kept between F and 2F in a convex lens.

d) Write the nature, size and position of the image formed?​

Answer 1

Answer:

1) Principal Axis

2) Convex lens

3) See the Picture

4) When the object is placed between F and 2f of a convex lens:  

From the above ray diagram we can observe that If we place the object between F(focus)and 2F the image formed is always beyond 2F. The images are real and always inverted.