Question

If the first�order maximum for pure�wavelength light falling on a double slit is at an angle of 10.1�, at what angle is the second�order maximum?
(in deg) 20.5 deg

You are correct. Your receipt no. is 169-9313 If the first�½order maximum for pure�½wavelength light falling on a double slit is at an angle of 10.1�½, at what angle is the second�½order maximum? (in deg) 20.5 deg You are correct. Your receipt no. is 169-9313What is the angle of the first minimum? I would like to get help on the 2nd part?

What is the angle of the first minimum?

I would like to get help on the 2nd part?

Answer 1

Answer 2

from the relation

dsin(theta) = mL

sin10/sin(Q2) = 1/2
Sin Q2 = 2sin10
Q2 = 20.32 degrees

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d/L = 1/sin10

for first minimum , m=1

disn(Q) = (m+1/2) L

sinQ = (3/2) sin 10

Q = 15.09 degrees