ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

The waves produced in a microwave oven have frequency

Question # 2

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 3

The wave motion set up in any medium depends upon:

Question # 4

If a wave can be polarized, it must be

Question # 5

Which waves are used in sonography?

Question # 6

The instantaneous velocity of a body moving along a circle is directed

Question # 7

When a body moves to and fro motion, this type of motion is called

Question # 8

Si units of time period is

Question # 9

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 10

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 11

The vibratory or oscillatory motion of a body is

Question # 12

transverse wave motion is possible in:

Question # 13

The waves produced in a microwave oven have wavelength.

Question # 14

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 15

When an oscillatory motion repeats itself, then this type of motion is called

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms
2 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
3 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
4 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
5 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
6 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
7 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
8 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
9 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
10 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them

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