Chapter 7: Physical Optics

The combination of two or more waves that result in a single wave

• A. diffraction
• B. resonance
• C. reflection
• D. interference

When a wave bends around a barrier or passes through an opening, it is called

• Diffraction
• Reflection
• Refraction
• Interference

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NGSS.MS-PS4-2

To demonstrate the phenomenon of interference, we require two sources

• Of the same frequency and having a constant phase difference

• Of nearly the same frequency

• Of the same frequency

• Of different wavelengths

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NGSS.HS-PS4-1

For Young's double slit experiment, the fifth dark fringe is equivalent to:

• m=4 maximum

• m=5 maximum

• m=4 minimum

• m=5 minimum

It is difficult to get clear Young's double slit fringes with white light because

• The frequency of white light is too high

• The wavelength of white light is too low

• the different colour fringes overlap

• white light is not bright enough

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NGSS.HS-PS4-5

'Every points on the wave front of light are the sources of smaller waves called wavelets.' This is the statement of

• Huygen

• Hubble

• Ronaldo

• Fazlina

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NGSS.HS-PS4-5

Which diagram best represents the shape and direction of a series of wave fronts after they have passed through a small opening in a barrier?

• 
• 
• 
• 

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NGSS.HS-PS4-1

What type of interference is represented in this diagram?

• Constructive

• Destructive

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What type of interference is represented in the diagram?

• Constructive

• Destructive

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NGSS.MS-PS4-1

Which of the following will increase the spacing of Young's double slit fringes

• A blue light is used instead of a red light
• the screen is moved closer to the slits
• the slits are moved closer together
• Each slit is made wider