Flashcard on Interference of light

Front

What is wave interference?

Back

Wave interference is when more than one wave meets and interacts in the same medium.

Front

What happens during constructive interference?

Back

During constructive interference, two waves combine to produce a wave of greater amplitude.

Front

What happens during destructive interference?

Back

During destructive interference, two waves combine to produce a wave of lesser amplitude.

Front

In Young's double-slit experiment, what is the ratio of maximum to minimum intensities if the amplitudes are in the ratio 3:1?

Back

The ratio of maximum to minimum intensities is 4:1.

Front

True or False: Two waves cannot exist in the same space or in the same medium at the same time.

Back

False.

Front

What is the formula for intensity in terms of amplitude?

Back

Intensity is proportional to the square of the amplitude (I ∝ A²).

Front

What is the significance of coherent sources in interference?

Back

Coherent sources maintain a constant phase difference, which is essential for producing stable interference patterns.

Front

What is the condition for constructive interference?

Back

Constructive interference occurs when the path difference between two waves is an integer multiple of the wavelength.

Front

What is the condition for destructive interference?

Back

Destructive interference occurs when the path difference between two waves is an odd multiple of half the wavelength.

Front

In Young's experiment, if the amplitudes of two sources are 3a and a, what is the ratio of the intensities of bright and dark fringes?

Back

The ratio of the intensities of bright and dark fringes will be 4:1.