A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity ofthe ball the instant befo
1 answer:
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Solution :
Given :
Wavelength of the thin beam of light, λ = 50 μm
Distance of the screen from the slit, D = 3.00 m
Width of the fringe, Δy = ±8.24 mm
Therefore, width of the slit is given by :
= 0.000018203 m
= 0.0182 mm
= 0.018 mm
The intensity of light is given by :
, where
Now,
= 0.1854
≈ 0.18
= 2 x0.81