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  2. AP Physics 2
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In a double slit experiment diagram, what does 'd' represent?

'd' represents the distance between the two slits.

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In a double slit experiment diagram, what does 'd' represent?

'd' represents the distance between the two slits.

In a double slit experiment diagram, what does 'θ\thetaθ' represent?

'θ\thetaθ' represents the angle from the central beam to the fringe.

In a double slit experiment diagram, what does 'λ\lambdaλ' represent?

'λ\lambdaλ' represents the wavelength of light.

In a double slit experiment diagram, what does 'x' represent?

'x' represents the distance from the central fringe to the mth fringe.

In a double slit experiment diagram, what does 'L' represent?

'L' represents the distance from the slits to the screen.

What is the effect of increasing the wavelength (λ\lambdaλ) 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: Δl=mλ\Delta l = m\lambdaΔl=mλ | Destructive: Δl=(m+12)λ\Delta l = (m + \frac{1}{2})\lambdaΔl=(m+21​)λ, where m = 0, 1, 2...

Compare the resulting wave amplitude in constructive and destructive interference.

Constructive: Amplitude increases | Destructive: Amplitude decreases.