Alight with a second-order bright band forms a diffraction angle of 30.0°. the diffraction grating has 250.0 lines per mm. the wavelength of the light is nm.

The wavelength of the light isi 1000Nm

Answer : wavelength, λ = 1000 nm

Explanation :

It is given that,

Diffraction angle,

The diffraction grating has 250 lines per mm\

For bright band the equation of grating is given by :

n = order, here n is 2

Since, d = 1/N

λ = 0.000001 m

or

λ = 1000 nm

So, the wavelength of the light is 1000 nm.

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.