Gce Model Questions Vol1 2021 Physics Question 19
Practice objective / multiple choice question 19 from the 2021 Gce Model Questions Vol1 Physics examination.
A diffraction grating has 5000 lines per centimetre. It is illuminated by monochromatic light. The second‑order maximum is observed at an angle of \(30^{\circ}\). (i) Find the wavelength of the light. (ii) If the grating is rotated so that the first‑order maximum appears at \(20^{\circ}\), what is the wavelength of the light now observed?
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About This Question
This is Gce Model Questions Vol1 2021 Physics Question 19. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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