In a reflection of light experiment, the angle of incidence is measured to be 50

Question

In a reflection of light experiment, the angle of incidence is measured to be 50 degree. The angle of reflection is measured to be 45 degree. What is the % difference between the two values? A solenoid 20 cm long is wound with 5000 turns of wire. The magnetic field at the center of a solenoid is given by the equation: B = mu_o ni where mu_o is the permittivity of free space. mu_o = 4 pi times 10^-7 T-m/A, n is the number of turns per unit length and i is the current in the solenoid. Calculate the magnetic field at the center of the solenoid when a current of 10 A flows. Sketch a graph of B vs i for the solenoid of problem 5. What potential difference (voltage) is required to cause 2 A to flow through a resistance ohm?

Explanation / Answer

Q4.
Angle of incidence = 50 deg
Angle of reflection = 45 deg

%difference = [(50-45)/((50+45)/2)]*100
= 10.5%

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