Last Updated On 16-03-2023 - By Jeesha Sara
A single slit is located effectively at infinity in front of a lens of focal length 1 m and it is illuminated normally with light of wavelength 600 nm. The first minima on either side of central maximum are separated by 4 mm. Width of the slit is ……
a)
0.1 mm
b)
0.2 mm
c)
0.3 mm
d)
0.4 mm
A single slit is located effectively at infinity in front of a lens of focal length 1 m and it is illuminated normally with light of wavelength 600 nm. The first minima on either side of central maximum are separated by 4 mm. Width of the slit is ……
a)
0.1 mm
b)
0.2 mm
c)
0.3 mm
d)
0.4 mm
Question ID - 150024 :-
A single slit is located effectively at infinity in front of a lens of focal length 1 m and it is illuminated normally with light of wavelength 600 nm. The first minima on either side of central maximum are separated by 4 mm. Width of the slit is ……
a)
0.1 mm
b)
0.2 mm
c)
0.3 mm
d)
0.4 mm
|
A single slit is located effectively at infinity in front of a lens of focal length 1 m and it is illuminated normally with light of wavelength 600 nm. The first minima on either side of central maximum are separated by 4 mm. Width of the slit is …… |
|||||||
|
a) |
0.1 mm |
b) |
0.2 mm |
c) |
0.3 mm |
d) |
0.4 mm |
|
(c)
Hence,
|
separation between minima on either side of central maximum’
Next Question :
In the set up shown in Fig the two slits, 
and 
are not equidistant from the slit 
. The central fringe at 
is then
.png)
|
a) |
Always bright |
b) |
Always dark |
|
c) |
Either dark or bright depending on the position of |
d) |
Neither dark nor bright |
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