Which part of the eye determines its color? MCQ with Answer and Explanation

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Which part of the eye determines its color?

A. Iris

B. Pupil

C. Retina

D. Cornea

Answer: Option A

Solution (By JKSSB Mock Tests)

The iris is the colored part of the eye that controls pupil size.

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Question #1

Which of these is an application of nanotechnology?

A. Generating wind power

B. Building massive skyscrapers

C. Medical drug delivery

D. Storing water in tanks

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Correct Answer: Option C

Explanation:
Nanotechnology allows for targeted drug delivery to specific cells in the body.

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Question #2

What is the speed of light approximately?

A. 150,000 km/s

B. 300,000 km/s

C. 30,000 km/s

D. 1,000,000 km/s

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Correct Answer: Option B

Explanation:
The speed of light in a vacuum is approximately 300,000 kilometers per second.

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Question #3

What is the study of sound called?

A. Mechanics

B. Optics

C. Dynamics

D. Acoustics

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Correct Answer: Option D

Explanation:
Acoustics is the branch of physics that deals with sound.

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