Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 12 - 17 of 133

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Question number: 12

» Physics » Light

MCQ▾

Question

Which of the following is the example of ideal black body?

Choices

Choice (4) Response
a.

Kajal

b.

A pin hole box

c.

Blackboard

d. Question does not provide sufficient data or is vague

Question number: 13

» Physics » Motion and Force

MCQ▾

Question

A helicopter, moving vertically upwards, releases a packet when it is at a certain height above the ground. The packet initially moves upwards for a time t 1 and then falls downwards for a time t 2 until it reaches the ground. Then

Choices

Choice (4) Response
a.

Data insufficient

b.

t1 = t2

c.

t1 < t2

d.

t1 > t2

Question number: 14

» Physics » Light

MCQ▾

Question

When seen in green light, the saffron and green portions of our national flag will appear as

Choices

Choice (4) Response
a.

black and green respectively

b.

green

c.

black

d.

green and yellow respectively

Question number: 15

» Physics » Light

MCQ▾

Question

Your image in a bathroom mirror results from

Choices

Choice (4) Response
a.

refraction

b.

specular

c.

diffuse reflection

d.

specular reflection

Question number: 16

» Physics » Light

MCQ▾

Question

The wavelength the radiation emitted by a body depends upon

Choices

Choice (4) Response
a.

the area of the surface

b.

the nature of the surface

c.

the temperature of the surface

d. All of the above

Question number: 17

» Physics » Light

Assertion-Reason▾

Assertion (Ꭺ)

Radio waves are bending in a magnetic field.

Reason (Ꭱ)

Radio waves are electromagnetic in nature.

Choices

Choice (4) Response
a. Ꭺ is true but Ꭱ is false
b. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
c. Ꭺ is false but Ꭱ is true
d. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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