Skip to content
Philoid
Browse Saved
Back to chapter
Physics
5. Refraction of Light
Home · Class 10 · Physics · Ref. Book · 5. Refraction of Light
Prev
Next
Q30 of 284 Page 240

List some things that concave lens and convex mirror have in common.

parallel rays of light coming from infinity diverges at focus.


More from this chapter

All 284 →
30

With the help of a labeled diagram, explain how a concave lens diverges a beam of parallel light rays.

Mark the principal axis, optical centre, principal focus and focal length of the concave lens on the diagram.

30

State whether concave lens has a real focus or a virtual focus.

31

Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:

(a) At 2F1


(b) Between F1 and the optical centre 0 of the lens.


Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.

32

An object is placed well outside the principal focus of a convex lens. Draw a ray diagram to show how the image is formed, and say whether the image is real or virtual.

Questions · 284
5. Refraction of Light
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 28 29 29 30 30 30 31 32 33 34 35 36 37 38 39 40 41 42 43 43 44 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 18 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 17 18 18 19 20 21 22 23 24 25 25 26 27 28 29 29 29 30 30 30 31 32 32 33 33 33 34 34 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 50 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 26 27 27 27 28 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 1 2 3 4 5 5 6 7 8 9 10 11 12 13 14 15 15 16 16 17 18 19 20 21 22 23 24 25 1 2 3 4 5 6 7 8 9 10 11 12 13 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 29 29 30 30 31 32 33 34 35 36 37 38 39 40
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved