Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 150 - 154 of 219

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Question 150

Physics
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Question

MCQ▾

The force of friction between two bodies is:

Choices

Choice (4)Response

a.

Parallel to contact surface

b.

Perpendicular to contact surface

c.

Opposite to relative motion

d.

Both a. and c. are correct

Question 151

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Question

MCQ▾

When current passes through the water, due to chemical effect of electric current, water splits into:

Choices

Choice (4)Response

a.

Positively charge hydrogen ions and negatively charged oxygen ions

b.

Hydrogen and oxygen atoms having negative and positive charges respectively

c.

Negative charged hydrogen ions and positively charged oxygen ions

d.

Hydrogen and oxygen atoms having positive and negative charges respectively

Question 152

Physics
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Question

MCQ▾

The power of the adjusting focal length is:

Choices

Choice (4)Response

a.

Eye power

b.

Power of accommodation

c.

Power of Vision

d.

Power of lens

Question 153

Physics
Edit

Question

MCQ▾

Due to deficiency of which of the following vitamin, the night blindness occurs?

Choices

Choice (4)Response

a.

D

b.

B

c.

A

d.

C

Question 154

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Question

MCQ▾

During the flow of current through a conductor, some amount of electric energy convers into:

Choices

Choice (4)Response

a.

Mechanical energy

b.

Chemical energy

c.

Heat energy

d.

None of the above