AP Physics: Interference & Diffraction

Interference of light is evidence that ___________.

• the speed of light is very large

• light is a transverse wave

• light is electromagnetic in character

• light is a wave phenomenon

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

All of the following are evidence that light is a wave EXCEPT:

• refraction

• reflection

• interference

• diffraction

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

These two waves are _________.

• monochromatic and in phase

• monochromatic and out of phase

• multichromatic and in phase

• multichromatic and out of phase

Tags

NGSS.HS-PS4-1

These two waves will ________ interfere and result in a _________ amplitude.

• constructively, increased

• constructively, decreased

• destructively, increased

• destructively, decreased

Tags

NGSS.HS-PS4-1

The path difference between these two waves is ________.

• 0 waves

• 1 wave

• 2 waves

• 3 waves

Tags

NGSS.HS-PS4-1

These two waves would ______ interfere and cause the brightness to be at a _____.

• constructively, minima

• constructively, maxima

• destructively, minima

• destructively, maxima

Tags

NGSS.HS-PS4-1

The path difference between these two waves is ______ and would result in a _____-order bright spot.

• 6 wavelengths, sixth

• 3 wavelengths, sixth

• 6 wavelengths, third

• 3 wavelengths, third

Tags

NGSS.HS-PS4-1

Two beams of coherent light travel different paths, arriving such that they destructively interfere on the screen. The two beams must

• arrive in phase

• arrive 45-degrees out of phase

• arrive 90-degrees out of phase

• arrive 180-degrees out of phase

In a Young's double-slit experiment, the center of a bright fringe occurs wherever waves from the slits differ in path length by:

• a quarter of a wave

• half of a wave

• any integer number of waves

• multiples of four waves

Tags

NGSS.HS-PS4-1

In Young's Double slit experiment, two adjacent bright fringes are 0.5 cm apart. The distance between two dark fringes ______.

• is less than 0.5 cm

• is greater than 0.5 cm

• is exactly 0.5 cm

• is dependent on which order is observed.