Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 112 - 117 of 133

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Question number: 112

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

The masses of the three wires of copper are in the ratio 5:3:1 and their lengths are in the ratio 1: 3: 5. The ratio of their electrical resistance is

Choices

Choice (4) Response

a.

5:3:1

b.

1:3:5

c.

125:15:1

d.

1:15:125

Question number: 113

» Physics » The Universe

MCQ▾

Question

Rainbow is formed due to a combination of

Choices

Choice (4) Response

a.

Dispersion and focusing

b.

Dispersion and total internal reflection

c.

Refraction and absorption

d.

Refraction and scattering

Question number: 114

» Physics » Light

MCQ▾

Question

Two lenses are placed in contact with each other and the focal length of the combination is 80 cm. If the focal length of one is 20 cm, then the power of the other will be

Choices

Choice (4) Response

a.

-3.75D

b.

-1.0 D

c.

4.0 D

d.

1.66 D

Question number: 115

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Three equal resistors each equal to “r” are connected as shown in figure. The equivalent resistance between points A and B is

Three resisters connection

Three Resisters Connection

Find equivalent resistance between two points

Choices

Choice (4) Response

a.

r3

b.

r

c.

3r

d.

23 r

Question number: 116

» Physics » Light

MCQ▾

Question

Our eye is most sensitive for which of the following wave length?

Choices

Choice (4) Response

a.

6500 Å

b.

4500 Å

c.

Equally sensitive for all wave lengths of visible spectrum

d.

5500 Å

Question number: 117

» Physics » Light

MCQ▾

Question

How does a light normally travel?

Choices

Choice (4) Response

a.

Always towards a dark area

b.

In a curved line

c.

In concentric circles

d.

In a straight line

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