Physics (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 4 - 6 of 78

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Question number: 4

» Physics » Sound

Appeared in Year: 2013

MCQ▾

Question

A ship sends a sonar wave to the sea bed, which is flat and measured several times over a large area. One day the reflected sound wave takes longer time than in previous measurements. The possible reason is

Choices

Choice (4) Response

a.

The frequency of the sonar wave, generated by the equipment is lower than previous measurements

b.

The loudness of the sonar wave, generated by the equipment is lower than previous measurement

c.

There is a huge air bubble in the path of sonar wave

d.

There is a solid object of large size in the path of sonar wave

Question number: 5

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

Question

Consider a simple circuit containing a battery and three identical incandescent bulbs A, B and C. Bulb A is wired in parallel with bulb B and this combination is wired in series with bulb C. What would happen to the brightness of the other two bulbs if bulb A were to burn out?

Choices

Choice (4) Response

a.

Bulb B would get brighter and bulb C would get dimmer

b.

There would be no change in the brightness of either bulb B or bulb C

c.

A and B would get brighter

d.

Only bulb B would get brighter

Question number: 6

» Physics » Motion and Force

Appeared in Year: 2013

MCQ▾

Question

The figure shown below depicts the distance travelled by a body as a function of time.

 A distance vs time graph

a Distance vs Time Graph

Find the average and maximum speed of a body by using given traveled distance in given time

The average speed and maximum speed between 0 and 20 s are

Choices

Choice (4) Response

a.

2.0 m/s, 2.6 m/s respectively

b.

1.3 m/s, 2.0 m/s respectively.

c.

1 m/s, 2.0 m/s respectively.

d.

1 m/s, 1.6 m/s respectively.

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