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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionEasy2 minPYQ_2020

PhysicsEasysingle choice

A light of wavelength $6000 Å$ is incident on a single slit. First minimum is obtained at a distance of $0.4 cm$ from the centre. If width of the slit is $0.3 mm$ , then the distance between slit and screen will be

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Answer:

Solution:

Using $a \sin θ = n λ$

Or $a \times \frac{x}{D} = n λ$ or $a = n λ \times \frac{D}{x}$

Or $D = \frac{a \times x}{n λ}$

$= \frac{3 \times 10^{- 4} \times 4 \times 10^{- 3}}{1 \times 6000 \times 10^{- 10}} m = 2.0 m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2020

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