interference (physics)

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

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

• Increasing the frequency of the waves
• moving the screen further away
• decreasing the distance between the slits
• Using narrower slits

Tags

NGSS.HS-PS4-1

Which of the following has no effect on the spacing of Young's double slit fringes

• Changing the wavelength 
• Changing the frequency
• Moving the screen further away
• Changing the size of each slit

Tags

NGSS.HS-PS4-1

Which of the following statements is untrue when applied to 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
• The bright and dark bands are the same width

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

Which of the following will increase the spacing of the interference fringes

• Moving the screen closer
• Increasing the number of slits
• Using more slits per mm
• Using a higher frequency

Which of the following does not change when the number of slits is increased?

• The brightness of the fringes
• The spacing of the fringes
• The width of the dark bands
• the width of the bright bands

A red light has a wavelength of 650nm.
It is shone through a double slit spacing 0.2mm onto a screen 2m away.
The fringe spacing is?

• 6.5 x 10 ^-6 m
• 1.6 x 10^-3 m
• 6.5 x 10^-3 m
• 1.6 x 10^-6 m

Tags

NGSS.HS-PS4-1

A red light of wavelength 650 nm is used with a diffraction grating with 500 lines per mm.
How many diffraction maxima will be seen in total

• 1
• 3
• 5
• 7

A yellow light of wavelength 500 nm is shone through a diffraction grating with 400 lines/mm.
At what angle to the straight through direction is the 2nd order fringe in degrees.

• 12
• 24
• 53
• There is no 2nd order