Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsYDSEEasy2 minPYQ_2020

PhysicsEasysingle choice

In Young's double-slit experiment, the spacing between the slits is 'd' and the wavelength of light used is 6000 $Å$ . If the angular width of a fringe formed on a distant screen is $1^{o}$ , then calculate 'd'.

Options:

Answer:

Solution:

Angular fringe width $θ_{0} =$ $\frac{β}{D}$

$θ_{0} = \frac{β}{D} = \frac{D λ}{d} \times \frac{1}{D} = \frac{λ}{d}$

$θ_{0} = 1^{o} = \frac{π}{180}$ rad and

$λ = 6 \times 10^{- 7} m$

$d = \frac{λ}{θ_{0}} = \frac{180}{π} \times 6 \times 10^{- 7}$

$= 3.44 \times 10^{- 5} m = 0.03 m m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:YDSE

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...