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1)A red low-power laser with λ = 634nm was beamed
at a double-slit grating. An interference pattern
appeared on a screen 2.50 m from the grating. The
distance from central spot to the next bright spot
was 22.5cm.
What is the spacing between the slits in the grating?
2. The red laser (in Q1) is replaced by a blue laser
with a shorter wavelength. All else is the same.
Show mathematically whether the interference
pattern it produces will place the bright spots closer
or further apart.
3.
Given that the blue laser in Q2 has a wavelength of
445 nm, calculate the “spot-spacing” for the same
slit grating and screen distance as in Q1.
4.
A green laser beam produces spots which are
0.334m apart (central to m=1) when a grating is used
with slits 3,000 nm apart and a screen 1.90m away.
What is the wavelength of the laser light?
Step by stepSolved in 2 steps with 2 images
A red low-power laser with λ = 634nm was beamed
at a double-slit grating. An interference pattern
appeared on a screen 2.50 m from the grating. The
distance from central spot to the next bright spot
was 22.5cm.
What is the spacing between the slits in the grating?
A red low-power laser with λ = 634nm was beamed
at a double-slit grating. An interference pattern
appeared on a screen 2.50 m from the grating. The
distance from central spot to the next bright spot
was 22.5cm.
What is the spacing between the slits in the grating?
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