If the wavelength of light used in photoemission is less than - then the fringe width will

The correct option is B DecreaseDe broglie wavelength λ = hc √( 2mE ) #160;( J ) = hc √( 2meV ) #160;( eV ) Fringe width β =λ D d = hcD d√( 2m ...

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Standard XII

Physics

Intensity vs Photocurrent

If the wavele...

Question

If the wavelength of light used in photoemission is less than $λ$ , then the fringe width will

Increase

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Decrease

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Remain same

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Cannot be decided

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Solution

The correct option is B Decrease
De broglie wavelength $λ = \frac{h c}{\sqrt{2 m E}} (J) = \frac{h c}{\sqrt{2 m e V}} (e V)$

Fringe width $β = \frac{λ D}{d} = \frac{h c D}{d \sqrt{2 m e V}}$

Even though the photoemission occurs, on decreasing the wavelength finge width also decreases.

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If the wavelength of light used in photoemission is less than λ, then the fringe width will

The correct option is B DecreaseDe broglie wavelength λ=hc√2mE(J)=hc√2meV(eV)Fringe width β=λDd=hcDd√2meVEven though the photoemission occurs, on decreasing the wavelength finge width also decreases.

If the wavelength of light used in photoemission is less than $λ$ , then the fringe width will

The correct option is B Decrease
De broglie wavelength $λ = \frac{h c}{\sqrt{2 m E}} (J) = \frac{h c}{\sqrt{2 m e V}} (e V)$

Fringe width $β = \frac{λ D}{d} = \frac{h c D}{d \sqrt{2 m e V}}$

Even though the photoemission occurs, on decreasing the wavelength finge width also decreases.