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What is the effect of increasing the wavelength ( $\lambda$ ) in Young's double-slit experiment?

The fringe spacing (x) increases.

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What is the effect of increasing the wavelength ( $\lambda$ ) in Young's double-slit experiment?

The fringe spacing (x) increases.

What is the effect of increasing the slit separation (d) in Young's double-slit experiment?

The fringe spacing (x) decreases.

What is the effect of increasing the distance to the screen (L) in Young's double-slit experiment?

The fringe spacing (x) increases.

What is the effect of light passing through a narrow slit?

The light diffracts, spreading out after passing through the slit.

What is the effect of using coherent light in Young's double-slit experiment?

A stable and clear interference pattern is produced.

Compare constructive and destructive interference in terms of path difference.

Constructive: $\Delta l = m\lambda$ | Destructive: $\Delta l = (m + \frac{1}{2})\lambda$ , where m = 0, 1, 2...

Compare the resulting wave amplitude in constructive and destructive interference.

Constructive: Amplitude increases | Destructive: Amplitude decreases.

Define constructive interference.

Waves meet in phase, amplitudes add up, resulting in a larger wave. Path difference: $\Delta l = m\lambda$ , where m = 0, 1, 2...

Define destructive interference.

Waves meet out of phase, amplitudes cancel out, resulting in a smaller wave. Path difference: $\Delta l = (m + \frac{1}{2})\lambda$ , where m = 0, 1, 2...

What is diffraction?

The bending or spreading of waves as they pass through an opening or around an obstacle.

Define wavelength.

The distance between two successive crests or troughs of a wave.

Define 'd' in the context of double-slit interference.

'd' represents the distance between the two slits.