Physics · Diffraction due to a single slit, width of central maximum
A: Coloured spectrum is seen when we look through a cloth R: Diffraction of ligh
A: Coloured spectrum is seen when we look through a cloth R: Diffraction of light takes place when light is travelling through the pores of cloth
- A. Both A and R are true, and R is not correct explanation of A
- B. Both A and R are true, and R is correct explanation of A
- C. A is true but R is false
- D. A is false but R is true
Step-by-step solution
When light passes through the fine pores of a cloth, diffraction occurs because the pore size is comparable to the wavelength of light. Different wavelengths diffract at different angles, producing a coloured spectrum. Thus, both assertion and reason are true, and the reason correctly explains the assertion.
Related MCQs
- A microscope is used with sodium light and its resolving power is not sufficiently large.Higher resolution will be obtained by using wavelen…
- The bending of light about corners of an obstacle is called:…
- The aperture diameter of a telescope is 5 . The separation between the moon and the earth is With light of wavelength of , the minimum separ…
- Light of wavelength is incident normally on a slit having a width of The angular width of the central maximum measured from minimum to minim…