F4 Chapter 5.5 Diffraction of wave

The bending of the waves increases when

• X is smaller than wavelength

• X is larger than wavelength

• X is equal to wavelength

• X is equal to zero

All the following are fixed after diffraction except

• Frequency

• Wavelength

• Velocity

• Amplitude

Diffraction of light is hardly noticeable compared to sound because

• eye are not very sensitive

• light travels at high speed

• frequency of light is very low

• wavelength of the light is very short.

Which of the pattern below shows the wavelength correctly when the wave pass through a small gap?

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Which of the following pattern is correct when a wave pass through a wide gap?

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Diffraction become more obvious if the obstacle is

• bigger than wavelength

• smaller than wavelength

• equal to wavelength

• non of them are correct

Diffraction is

• Change of velocity of the wave when the wave pass through a gap.

• Change of direction of the wave when the wave pass through a gap.

• Change of density of the wave when the wave pass through a gap.

• Change of the speed of the wave when the wave pass through a gap.

When the opening of the gap is wider, which of the following physical quantity increase?

• speed

• amplitude

• frequency

• wavelength

What type of wave experiences diffraction?

• Longitudinal waves

• Transverse waves

• Both longitudinal and transverse waves

• Neither longitudinal nor transverse waves

How does the size of the diffraction pattern depend on the size of the opening through which the wave passes?

• The diffraction pattern increases as the size of the opening increases

• The diffraction pattern decreases as the size of the opening decreases

• The diffraction pattern is independent of the size of the opening

• The diffraction pattern increases as the size of the opening decreases