Question

Which of the following answers are true: Group of answer choices The larger the slit, the better the wavelength resolution of the spectrometer A slit can select wavelengths spatially. This is for example used in a monochromator, where focused light after refraction in a prism or diffracted from a grating can be selected through a narrow slit. A slit can be used to direct light alternatingly to the sample or the blank. A slit can be used as a photodetector. The narrower the slit, the better the wavelength resolution of t

Answer 1

true b, e

Step-by-step explanation:

The expression that describes the diffraction of a grating is

d sin θ = m λ

where d is the separation between the slits, m is the order of the spectrum

let's analyze the different answers

a) False. The size (height) of the slits does not influence the resolution, the number of them per unit of length influences, the greater the number, the smaller the distance (d) this they

b) True. The spectrum is resolved on a screen, in the form that each wavelength corresponds to a fixed distance from the central maximum, for a given order

c) False. The exit slit selects a given wavelength, but does not deflect the beam from its path

d) False. The slit lets in light, but does not measure its intensity

e) True. For a continuous spectrum, the wavelength variation that passes through a slit is proportional to its width. For a discrete spectrum the width of the slit does not affect the wavelength