NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension: Questions 571 - 576 of 828

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Question number: 571

» Physics » Source of Energy

MCQ▾

Question

Which one among the following waves is called waves of heat energy?

Choices

Choice (4) Response

a.

Ultraviolet waves

b.

Infrared waves

c.

Microwaves

d.

Radio waves

Question number: 572

» Political Science » Democracy and Elections

MCQ▾

Question

Which of the following are the characteristics or forms of power sharing?

Choices

Choice (4) Response

a.

Division of power among different social groups

b.

Federalism

c.

System of checks and balances

d.

All a. , b. and c. are correct

Question number: 573

» Mathematics » Trigonometry

MCQ▾

Question

The shadow of a tower is 15 m, when the Sun’s elevation is 30°. What is the length of the shadow, when the Sun’s elevation is 60°?

Choices

Choice (4) Response

a.

4 m

b.

3 m

c.

6 m

d.

5 m

Question number: 574

» Mathematics » Number Systems

MCQ▾

Question

Zero is

Choices

Choice (4) Response

a.

a whole number

b.

a negative integer

c.

a natural number

d.

a positive number

Question number: 575

» Physics » Motion and Force

MCQ▾

Question

Consider the following statements

I. Grease is used to reduce friction in bicycle chain.

II. Ball bearings are used to reduce friction in a fan.

III. Oil can be used to increase friction in a car engine.

IV. Talc can be used to reduce friction when an object is sliding on a surface.

Which of the above statement (s) is/are correct?

Choices

Choice (4) Response

a.

I, II, and IV

b.

I, II, and III

c.

II, III, and IV

d.

I, III, and IV

Question number: 576

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

In an experiment, it was observed that when the length of a wire in an electrical circuit is doubled, everything else remaining same, the current becomes half. On the other hand, if the thickness (diameter) of the wire is doubled, the current becomes 4 times. Two wires W1 and W2 of the same metal have the same current passing through them. The thickness of wire W2 is twice that of W1, then the length of the wire W2 is

Choices

Choice (4) Response

a.

two times that of wire W1

b.

four times that of wire W1

c.

sixteen times that of wire W1

d.

same as that of wire W1

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