Q. In which of the following wavelengths, photosystem-I is inactive?

A) 780 nm
B) 680 nm
C) 690 nm
D) 550 nm
Explanation

In 780 nm of wavelength, photosystem-I is inactive. In photo system-I, the photocentre is special chlorophyll-a molecule called $P_{700}$.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.