# Physics question and answer on wave

### Physics question and answer on wave 1

What is wave?

Wave is  a disturbance which travels through a medium, transferring energy from one point to another, without permanently displacing the medium.

Read also :  Electromagnetic wave examples and uses

### Physics question and answer on wave 2

What is the difference between Mechanical wave and Electromagnetic wave?

Mechanical wave is any wave that require material medium for its propagation While

Electromagnetic wave is any wave that does not require any material medium for its propagation

### Physics question and answer on wave 3

Which of these is not example of Electromagnetic l wave?

A. Infrared B. x-ray C. light ray D. Radio waves. E None of the above

### Physics question and answer on wave 4

Give three examples of Mechanical waves

Water wave, Sound wave and wave generated by a pluck spring

### Physics question and answer on wave 5

Define a Transverse wave

A transverse wave is a wave in which the direction of propagation of the wave is perpendicular to the direction of vibration of the medium. Examples: All electromagnetic wave like light wave, radion wave, gamma ray, X-ray and many more.

Note that not all transverse waves are electromagnetic wave but all electromagnetic wave are transverse wave.

### Physics question and answer on wave 6

Define longitudinal wave

A longitudinal wave is any wave in which the direction of its propagation and the direction of vibration of the medium are the same. Example sound wave.

### Physics question and answer on wave 7

Describe the following terms in waves: Amplitude (a), Period (T), Frequency (f), Wavelength (λ) and wave Speed

Amplitude is the maximum displacement of a medium and is measured in meters

Period (T)  is defined as time taken to complete one oscillation or circle by wave. It is measured in seconds. Period can also be defined as time taken by wave to complete one wavelength.

Frequency (f) is the number of complete oscillation in one second. Frequency is measured in Hertz.

Wavelength (λ)  is a distance traveled by the wave after one complete oscillation or the distance between the successive crests and successive troughs . It is measured in meter.

Wave speed is the distance traveled by the wave per a second. It is measured in meter per a second (m/s)

### Physics question and answer on wave 8

In transverse wave diagram the upward maximum displacement is called what?

### Physics question and answer on wave 9

The maximum downward displacement in transverse wave diagram is called what?

### Physics question and answer on wave 10

What is a stationary wave?

A stationary wave is a wave obtained when two progressive waves of equal amplitude and frequency traveling in opposite directions combined together

### Physics question and answer on wave 11

Describe what are Node and Antinode in a stationary wave

Node is a point in a stationary wave where there is no movement of the medium

Antinode is a point in a stationary wave where there is maximum movement of the medium

### Physics question and answer on wave 12

Give two examples of a stationary wave

A wave obtained by plucking a string fix at both end and a wave set up in open and closed pipe.

### Physics question and answer on wave 13

Explain the following properties of wave: Reflection, Refraction, Diffraction, and interference

Reflection as a wave property is coming back of wave when it hit a polished or smooth obstacle. Examples are reflection of light, reflection of water wave and many more. Also know that you able to see yourself in mirror because of reflection, if not it would not be possible for you to see yourself with mirror.

Refraction is changing of direction of wave when it passes from one medium to another.  IN this process the speed and wavelength change also but the frequency of the wave remain the same.

Diffraction:  It is spreading of the wave fronts of wave in spherical form when it passes through a narrow gap. Here the gap behave as the second source of the wave

Interference: it is combination or superimposing of two waves in phase to each other traveling in the same direction to form bigger wave. There are two type of interference: Constructive and Destructive interference.

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