SATHEE: Optics 6 Question 16

Optics 6 Question 16

18. Young’s double slit experiment is carried out by using green, red and blue light, one colour at a time. The fringe widths recorded are $β_{G}, β_{R}$ and $β_{B}$ respectively.

Then,

(a) $β_{G} > β_{B} > β_{R}$

(b) $β_{B} > β_{G} > β_{R}$

(d) $β_{R} > β_{G} > β_{B}$

(2012)

Show Answer

Solution:

Fringe width $β = \frac{λ D}{d}$ or $β \propto λ$

Now, $λ_{R} > λ_{G} > λ_{B}$

$∴ β_{R} > β_{G} > β_{B}$

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Optics 6 Question 16

18. Young’s double slit experiment is carried out by using green, red and blue light, one colour at a time. The fringe widths recorded are βG,βR and βB respectively.

Solution:

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18. Young’s double slit experiment is carried out by using green, red and blue light, one colour at a time. The fringe widths recorded are $β_{G}, β_{R}$ and $β_{B}$ respectively.