Light with a wavelength of 546.1 nm passes through a 6.62 103 lines cm diffraction grating. what is the first-order angle of
diffraction?
a 21.2°
c3920
b. 34.60
d 41.6

The first order angle of diffraction is 21.2°.

Option A

Explanation:

It is known that light waves get diffracted through grating will undergo interference fringes. If the wavelength of light is comparable to the diameter of grating then constructive interference will be formed if and only if the diffracted line obey Bragg’s law i.e.,

Here d is the grating constant.

Here N is the number of lines per cm.

Hence,

Thus, we get,

Then the diffraction angle θ can be found as below with n=1 as we need to determine the first order diffraction angle.                    

Thus, obtaining the first- order diffraction angle as,

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.