Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 155 - 161 of 191

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Question number: 155

Physics
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Question

MCQ▾

Focal length is:

Choices

Choice (4)Response

a.

The radius of the circle formed with the curved part of the lens.

b.

Centre of the mirror

c.

Distance between the focus and pole of the mirror.

d.

Question does not provide sufficient data or is vague

Question number: 156

Physics
Edit

Question

MCQ▾

Speed of light is:

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question number: 157

Physics
Edit

Question

MCQ▾

Angle of incidence is 60 degree. What will be the angle between the incident ray and the reflected ray?

Choices

Choice (4)Response

a.

60 degree

b.

120 degree

c.

0 degree

d.

30 degree

Question number: 158

Physics
Edit

Question

MCQ▾

White light consists of which of the following color?

Choices

Choice (4)Response

a.

Red

b.

Indigo

c.

Green

d.

All a. , b. and c. are correct

Question number: 159

Physics
Edit

Question

MCQ▾

The ratio of the velocity of light in a vacuum to its velocity in a specified medium is known as:

Choices

Choice (4)Response

a.

Refractive index

b.

Speed index

c.

Velocity index

d.

Question does not provide sufficient data or is vague

Question number: 160

Physics
Edit

Question

MCQ▾

Which of the following objects are opaque?

Choices

Choice (4)Response

a.

Glass

b.

Bulb

c.

Wood

d.

Question does not provide sufficient data or is vague

Question number: 161

Physics
Edit

Question

MCQ▾

The separation of visible light into its different colors is known as:

Choices

Choice (4)Response

a.

Dispersion

b.

Reflection

c.

Refraction

d.

All of the above