Which of the following lenses would you prefer to use while reading small letters
found in a dictionary?
(a) A convex lens of focal length 50 cm.
(b) A concave lens of focal length 50 cm.
(c) A convex lens of focal length 5 cm.
(d) A concave lens of focal length 5 cm.

NCERT Class X
Science - Science

Chapter_Light – Reflection and
Refraction

1

Answers

2015-06-02T15:20:55+05:30