Calculate the angle for the third-order maximum of 580-nm wavelength yellow light falling on a diffraction grating with 500 lines/mm.

60.46°

Explanation:

Given that, the wavelength of yellow light which is falling on grating is,

The angle is of the order of 3 means m=3.

And number of lines per mm is,

Therefore the condition of maxima,

Here,

And for third order maxima, m=3

Therefore,

Therefore, the angle for third order maxima is 60.46°.

(75°f − 32) × 5/9 = 23.889°c

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .