Adiffraction grating is 1.50 cm wide and contains 3000 lines. When used with lig

Question

Adiffraction grating is 1.50 cm wide and contains 3000 lines. When used with light of a certainwavelength, a third-order maximum is formed at an angle of15.5°. What is the wavelength (innm)?
Enter a number. 1 nm
Adiffraction grating is 1.50 cm wide and contains 3000 lines. When used with light of a certainwavelength, a third-order maximum is formed at an angle of15.5°. What is the wavelength (innm)?
Enter a number. 1 nm
Adiffraction grating is 1.50 cm wide and contains 3000 lines. When used with light of a certainwavelength, a third-order maximum is formed at an angle of15.5°. What is the wavelength (innm)?
Enter a number. 1 nm
Enter a number.

Explanation / Answer

so lamda = 1.336 X10^-6 m / 3 = 4.454 X10^-7 m   = 445.4 nm

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