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# Gratings Dispersion and Resolving Power Multiple Choice Questions (MCQ) PDF Download

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## Gratings Dispersion and Resolving Power MCQs: Questions and Answers

MCQ 1:

If θ is angular separation of two lines whose wavelength differ by Δλ, then dispersion is equals to

1. Δλ/Δθ
2. Δθ/Δλ
3. Δθ/2Δλ
4. ΔθxΔλ
MCQ 2:

The principles of diffraction gratings were discovered by

1. Charles Darwin
2. James Gregory
3. Stephen Hawking
MCQ 3:

Optical component with a periodic structure that splits and diffracts light into several beams travelling in different directions, is called

1. reflection grating
3. defraction grating
MCQ 4:

Diffraction can create rainbow colors when illuminated by

1. wide spectrum light source
2. narrow spectrum light source
3. laser spectrum light source
4. single beam spectrum light source

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