A red postage stamp is viewed in yellow (monochromatic) light. It appears

The first postage stamp was issued in

In Young's double slit experiment, we get 60 fringes in the field of view of monochromatic light of wavelength 4000Å . If we use monochromatic light of wavelength 6000Å , then the number of fringes obtained in the same field of view is

In Young's double slit experiment, we get 60 fringes in the field of view of monochromatic light of wavelength 4000Å . If we use monochromatic light of wavelength 6000Å , then the number of fringes obtained in the same field of view is

In Young's double slit experiment, we get 10 fringes in the field of view of monochromatic light of wavelength 4000Å. If we use monochromatic light of wavelength 5000Å, then the number of fringes obtained in the same field of view is

If yellow light emitted by sodium lamp in Young.s double slit experiment is replaced by monochromatic blue of light of the same intensity

Yellow light emitted by sodium lamp in Young's double slit experiment is replaced by monochromatic blue light of the same intensity:

Yellow light emitted by sodium lamp in Young's double slit experiment is replaced by monochromatic blue light of the same intensity:

The refractive index of a material changes by 0.014 as the colour of the light changes from red to violet. A rectangular slab of height 2.00 cm made of this material is placed on a newspaper. When viewed normally in yellow light, the letters appear 1.32 cm below the top surface of the slab. Calculate the dispersive power of the material.

The refractive index of a material changes by 0.014 as the colour of the light changes from red to violet. A rectangular slab of height 2.00 cm made of this material is placed on a newspaper. When viewed normally in yellow light, the letters appear 1.32 cm below the top surface of the slab. Calculate the dispersive power of the material.