The diffraction grating can be used to find:
Correct answer: C. Wavelength (λ)
- A. Speed of light
- B. Refraction index
- C. Wavelength (λ)
- D. Frequency
Explanation
The correct option is C because A diffraction grating is commonly used to determine the wavelength of light. By observing the diffraction pattern produced when light passes through or reflects off the grating, one can measure the angles at which the diffraction maxima occur and use this information to calculate the wavelength of the incident light.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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