Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 84 - 91 of 191

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Question number: 84

Physics
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Question

MCQ▾

Joule is a unit of:

Choices

Choice (4)Response

a.

S I unit of force

b.

C G S unit of force

c.

S I unit of heat

d.

C G S unit of heat

Question number: 85

Edit

Question

MCQ▾

The unit of velocity is same as:

Choices

Choice (4)Response

a.

Time

b.

Speed

c.

Distance

d.

Acceleration

Question number: 86

Edit

Question

MCQ▾

cm/s is a C. G. S unit of what?

Choices

Choice (4)Response

a.

Time

b.

Displacement

c.

Distance

d.

Speed

Question number: 87

Physics
Edit

Question

MCQ▾

Why pendulum of a clock is made of invar steel?

Choices

Choice (4)Response

a.

It has high coefficient of thermal expansion

b.

It has low coefficient of thermal expansion

c.

Invar steel is very cheap and found easily.

d.

Question does not provide sufficient data or is vague

Question number: 88

Physics
Edit

Question

MCQ▾

What is energy?

Choices

Choice (4)Response

a.

Change of position with respect to time.

b.

How powerful you are.

c.

The capacity to do work.

d.

None of the above

Passage

Answer the following questions based on the following graph.

Figure showing speed time graph of a cyclist

Figure Showing Speed Time Graph of a Cyclist

Loading Image

Question number: 89 (1 of 2 Based on Passage) Show Passage

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Question

MCQ▾

From the above graph which part is shown as constant speed?

Choices

Choice (4)Response

a.

OA

b.

BC

c.

AB

d.

None of the above

Question number: 90 (2 of 2 Based on Passage) Show Passage

Edit

Question

MCQ▾

From the above graph where deceleration can be seen?

Choices

Choice (4)Response

a.

AB

b.

OA

c.

BC

d.

None of the above

Question number: 91

Physics
Edit

Question

MCQ▾

Microwave is a modern equipment for cooking food now a days. Which technique is used in microwave to cook food?

Figure showing a microwave

Figure Showing a Microwave

Loading Image

Choices

Choice (4)Response

a.

Conduction

b.

Insulation

c.

Radiation

d.

Convection