In the set up shown in Fig the two slits, 
and 
are not equidistant from the slit 
. The central fringe at 
is then
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|
a) |
Always bright |
b) |
Always dark |
|
c) |
Either dark or bright depending on the position of |
d) |
Neither dark nor bright |
Question ID - 150025 | SaraNextGen Answer In the set up shown in Fig the two slits, and are not equidistant from the slit . The central fringe at is then
a)
Always bright
b)
Always dark
c)
Either dark or bright depending on the position of 
d)
Neither dark nor bright
In the set up shown in Fig the two slits, and are not equidistant from the slit . The central fringe at is then
|
a) |
Always bright |
b) |
Always dark |
|
c) |
Either dark or bright depending on the position of |
d) |
Neither dark nor bright |
1 Answer - 5876 Votes
3537
Answer Key : (c) -
Answer Link|
(c) If path difference
|
the central fringe at 
is a bright fringe and if the path difference 
the central bright fringe will be a dark fringe