Home Physics Wave Optics NTA Abhiyas Question Yellow light is used in a single slit diffra…
Physics Wave Optics NTA Abhiyas Question MCQ (Single Correct)

Yellow light is used in a single slit diffraction experiment with slit width of 0. 6 mm. If yellow light is replaced by X-rays, then the observed pattern will reveal,

A
that the central maximum is narrower
B
more number of fringes
C
less number of fringes
D
no diffraction pattern

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Text Solution

Verified by Experts
The correct answer is:
D

no diffraction pattern

For diffraction pattern to be observed, the dimension of slit should be comparable to the wave length of light. In other words, diffraction is obtained when the slit width is of the order of wavelength of light (or any electromagnetic wave) used. Here, wavelength of X-rays (l - 10 ) < < slit width (0. 6 mm). Therefore, no diffraction pattern will be observed.

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