CBSE Class 10th Science | Chapter 11. The Human Eye and the Colourful World Solved Exercises

Solved Exercises | Chapter 11. The Human Eye and the Colourful World |Science | CBSE Class 10th

Question 1. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to
(a) presbyopia.
(b) accommodation.
(c) near-sightedness.
(d) far-sightedness.

Answer. (b) accommodation.

CBSE Class 10th Science | Chapter 10. Light – Reflection and Refraction | Solved Exercises

Solved Exercises | Chapter 10. Light – Reflection and Refraction | Science | Class 10th |CBSE

Question 1. Which one of the following materials cannot be used to make a lens?
(a) Water
(b) Glass
(c) Plastic
(d) Clay

Answer. (d) Clay