Welcome to the CDS 1 2024 Physics Lecture focusing on the Human Eye and The Colourful World through the lens of Multiple Choice Questions (MCQs). In this session, we’ll explore various MCQs related to the anatomy of the human eye, dispersion in prisms, and the scattering of light, including the Tyndall effect. By engaging with these MCQs, we’ll reinforce our understanding of these fundamental concepts in optics. Let’s begin!

Understanding the Human Eye

Before we delve into the MCQs, let’s briefly review the structure and function of the human eye. The human eye is a remarkable organ responsible for vision. It consists of several key components, including the cornea, iris, pupil, lens, retina, and optic nerve. These components work together to capture, focus, and transmit light signals to the brain, where they are interpreted as visual images.

Human Eye And The Colourful World Important MCQs

Q) A student is not able to see the blackboard question when seated at A distance of 5 m from the board. The defect he is suffering from is

A. Myopia

B. Presbyopia

C. Hypermetropia

D. Astigmatism

Ans : C

Q) The dispersion of light into its components by prism is due to

A. Each component gets deviated  by the same angle of Refraction.

B. Each component gets deviated  by a different angle of Refraction.

C. Reflection of each component light by different angle.

D. Reflection of each component light by same angle.

Ans : B

Q) Tyndall effect is a phenomenon of

A. Scattering of light by the colloidal particles.

B. Refraction of light by the colloidal particles.

C. Dispersion of light by dust particles.  

D. Refraction of light by dust particles.

Ans : A

Q) Humans can see objects at different distances with contrasting illuminations. This is due to

A.Far- sightedness

B.Near-sightedness 

C.Far-sightedness and Near-sightedness 

D. Accommodation of eye

Ans : D

Q) The part of the human eye on which the image is formed is

A. Pupil

B. Retina

C. Cornea

D. Iris

Ans : B

For an explanation of the above questions and other related MCQs, please refer to the YouTube video above.