Answer:
0.0031 m
Explanation:
y = Length of pixel = 281 μm
L = Distance to screen = 1.3 m
= Wavelength = 550 nm
d = Pupil diameter
= Angle
We have the expression

We have the expression

The pupil diameter calculates to 0.0031 m
a) x_{cm} = m₂/ (m₁ + m₂) d, b) x_{cm} = 52.97 pm