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प्रश्न
Which of the following device is used to study the spectra of light?
विकल्प
Fresnel biprism
Llyod's single mirror
Diffraction grating
Polariser
MCQ
उत्तर
Diffraction grating
Explanation:
A diffraction grating is an optical tool used to measure the wavelength of light and analyse the spectra of light sources.
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