Chapter 8 - Physical Optics

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

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

Coherent sources are those sources for which

• Phase difference remain constant

• Frequency remains constant

• Both phase difference and frequency remains constant

• None of these

Tags

NGSS.HS-PS4-1

Constructive interference is

• When two waves affect one another in  a positive way.
• Produce a single wave of greater amplitude (add together)
• Both

Tags

NGSS.MS-PS4-1

Which one is true about destructive interference:

• Produce bright fringes

• Produce dark fringes

• Produce a single wave of greater amplitude (add together)

• Have a one full wavelength path difference

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

• Diffraction
• Reflection
• Refraction
• Interference

Tags

NGSS.MS-PS4-2

Which of the following statements is not true about Young's double slit pattern?

• The fringes are equally spaced

• A bright fringe occurs when the waves arrive in phase

• The sources must be coherent

• Replace blue light to red light doesn't affect the fringe width

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

Tags

NGSS.HS-PS4-1

which moves faster blue shift or red shift?

• one shift
• two shift
• red shift 
• blue shift

Which of the following condition increase the fringe separation?

• Cover one of the two slits.

• Decrease the distance of the double slit to the screen.

• increase the slit separation.

• Use a longer wavelength light source.

The top bright fringe order is?

• Fourth order minimum

• Third order minimum

• Fourth order maximum

• Third order maximum