Answer- I would think low
Explanation:
Given that,
Wavelength of light, ![\lambda=600\ nm=6\times 10^{-7}\ m](https://tex.z-dn.net/?f=%5Clambda%3D600%5C%20nm%3D6%5Ctimes%2010%5E%7B-7%7D%5C%20m)
Angle, ![\theta=25^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D25%5E%7B%5Ccirc%7D)
We need to find the slit spacing for diffraction. For a diffraction, the first order principal maximum is given by :
![d\sin\theta=n\lambda](https://tex.z-dn.net/?f=d%5Csin%5Ctheta%3Dn%5Clambda)
n is 1 here
d is slit spacing
![d=\dfrac{\lambda}{\sin\theta}\\\\d=\dfrac{6\times 10^{-7}}{\sin(25)}\\\\d=1.41\times 10^{-6}\ m\\\\d=1.41\ \mu m](https://tex.z-dn.net/?f=d%3D%5Cdfrac%7B%5Clambda%7D%7B%5Csin%5Ctheta%7D%5C%5C%5C%5Cd%3D%5Cdfrac%7B6%5Ctimes%2010%5E%7B-7%7D%7D%7B%5Csin%2825%29%7D%5C%5C%5C%5Cd%3D1.41%5Ctimes%2010%5E%7B-6%7D%5C%20m%5C%5C%5C%5Cd%3D1.41%5C%20%5Cmu%20m)
So, the slit spacing is
.
The answer is A.68 degrees
A horizontal line on a speed/time graph means a constant speed.