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

Chapter 2. Physical Features Of India | Geography | Class 9th CBSE

Exercises |Chapter 2. Physical Features Of India | Geography | CBSE Class 9th

Question 1. Choose the right answer from the four alternatives given below:

(i) A landmass bounded by sea on three sides is referred to as
(a) Coast
(b) Island
(c) Peninsula
(d) none of the above

Answer : (c) Peninsula