Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 83 - 88 of 219

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Question 83

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Question

MCQ▾

Who showed that when electrodes were immersed in water and current was passed through water, bubbles of oxygen and hydrogen were produced?

Choices

Choice (4)Response

a.

John Frederic Daniel

b.

Thomas Alva Edison

c.

Alessandro Volta

d.

William Nicholson

Passage

See the following diagram of human eye, and answer the questions given below it.

Diagram of human eye

Diagram of Human Eye

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Question 84 (1 of 3 Based on Passage)

Physics
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Question

MCQ▾

Which of the following letter represents iris of eye?

Choices

Choice (4)Response

a.

Q

b.

P

c.

S

d.

R

Question 85 (2 of 3 Based on Passage)

Physics
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Question

MCQ▾

What is the function of part of eye represented by , in figure?

Choices

Choice (4)Response

a.

Covers anterior chamber of eye

b.

Controlling the amount of light entering the eye by contracting or dilating

c.

On which image formed

d.

Allows the light to fall on retina

Question 86 (3 of 3 Based on Passage)

Physics
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Question

MCQ▾

The letters and represent, respectively:

Choices

Choice (4)Response

a.

Iris, Lens and Cornea

b.

Retina, Cornea and Lens

c.

Retina, Lens and Cornea

d.

Iris, Lens and retina

Question 87

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Question

MCQ▾

If a glass rod is rubbed with silk, then glass rod is charged with:

Choices

Choice (4)Response

a.

Negative charges

b.

Neutral charges

c.

Positive charges

d.

Either positive or negative

Question 88

Physics
Edit

Question

MCQ▾

If a light incident on a smooth surface at angle with normal, then what will be reflected angle with respect to the normal drawn perpendicular at the point of reflection?

Choices

Choice (4)Response

a.

b.

c.

d.