If yellow light emitted by sodium lamp in Young’s double slit experiment is replaced by monochromatic blue light of the same intensity

Question

If yellow light emitted by sodium lamp in Young’s double slit experiment is replaced by monochromatic blue light of the same intensity (A) fringe width will decrease (B) fringe width will increase (C) fringe width will remain unchanged (D) fringes will become less intense

Tardigrade Admin · Accepted Answer

As λ decreases, fringe width (W) decreases, as W=(D λ/d)

Q. If yellow light emitted by sodium lamp in Young’s double slit experiment is replaced by monochromatic blue light of the same intensity

fringe width will decrease

fringe width will increase

fringe width will remain unchanged

fringes will become less intense

As $λ$ decreases, fringe width $(W)$ decreases, as $W = \frac{D λ}{d}$

Q. If yellow light emitted by sodium lamp in Young’s double slit experiment is replaced by monochromatic blue light of the same intensity

fringe width will decrease

fringe width will increase

fringe width will remain unchanged

fringes will become less intense

As λ decreases, fringe width (W) decreases, as W=dDλ​

As $λ$ decreases, fringe width $(W)$ decreases, as $W = \frac{D λ}{d}$