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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

In Young's double-slit experiment the two slits are illuminated by the light of wavelength $5890 \overset{\circ}{A}$ and the angular distance between the fringes obtained on the screen is $0.2 ° .$ If the whole apparatus is immersed in water then the angular fringe width will be, (the refractive index of water is $\frac{4}{3}$ )

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Answer:

Solution:

$w_{a} = \frac{λ}{d} \Rightarrow w_{a} \propto λ$

$\frac{{(w_{a})}_{w a t e r}}{w_{a}} = \frac{λ_{w a t e r}}{λ} = \frac{λ}{μ_{w a t e r} λ}$

${(w_{a})}_{w a t e r} = \frac{0.2 \times 3}{4} = 0.15 °$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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