Question

A diffraction pattern is obtained using a beam of red light. Which one among the following will be outcome if the redlight is replaced by blue light?

• A. Bands disappear
• B. Diffraction pattern becomes broader and further apart
• C. Diffraction pattern becomes narrower and crowded together
• D. No change

Answer 1

Answer: (C)

Diffraction pattern becomes narrower and crowded together

Since the wavelength of red light is more than that of blue light and no. of orders is inversely proportional to the wavelength of light ,diffraction pattern becomes narrower and crowded together.

Therefore, C is correct option.