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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsYDSEEasy2 minPYQ_2020

PhysicsEasysingle choice

In Young's double slit experiment, the $10^{th}$ maximum of wavelength $λ_{1}$ is at a distance of $y_{1}$ from the central maximum. When the wavelength of the source is changed to $λ_{2}$ , 5^thmaximum is at a distance of $y_{2}$ from its central maximum. The ratio $\frac{y_{1}}{y_{2}}$ is

Options:

Answer:

Solution:

Position of fringe from central maxima

$y_{1} = \frac{{nλ}_{1} D}{d}$

Given, $n = 10$

$y_{1} = \frac{10 λ_{1} D}{d}$ ……….(i)

For second source

$y_{2} = \frac{5 λ_{2} D}{d}$ ........... (ii)

$\frac{y_{1}}{y_{2}} = \frac{\frac{10 λ_{1} D}{d}}{\frac{5 λ_{2} D}{d}}$

$\frac{y_{1}}{y_{2}} = \frac{2 λ_{1}}{λ_{2}}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:YDSE

⏱ 2mℹ️ Source: PYQ_2020

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