The distance between atoms is 0.30 nm. What will be the wavelength of X-rays at an angle θ=30 for 1st-order diffraction?
Correct answer: B. λ = 0.30 nm
- A. λ = 0.60 nm
- B. λ = 0.30 nm
- C. λ = 0.20 nm
- D. λ = 0.90 nm
Explanation
The explanation is given below:According to Bragg's law:2dsine=nX 2(0.3*10^-9) sin(30)=1λ=0.3x10^-9= 0.3nm
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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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