Question

If a red light is passed through a dilute solution of chlorophyll solution. thespectrophotometer... If a red light is passed through a dilute solution of chlorophyll solution

Answer 1

if a red light is passed through a dilute solution of chlorophyll
solution, the spectrophotometer will detect what amount of transmittance of this

Answer 2

If the red light is passed through a dilute solution of chlorophyll and is measured through the spectrophotometer one can find the amount of light passing through the solution.

Since the dilution chlorophyll is a chemical solution, as we pass a beam of light through it, it absorbs some amount of light and spectrophotometers are used to measure this.  

The intensity of light after passing through the chemical solution is measured.