Wave Optics Tes...

Resolving power of telescope increases when

In an electron microscope if the potential is increased from $$20$$kV to $$80$$kV, the resolving power R of the microscope will become :

The wavelength of light observed on the earth from a moving star is found to decrease by $$0.05$$%. Relative to earth the star is

Two plane wavefronts of light, one incident on a thin convex lens and another on the refracting face of a thin prism. After refraction at them, the emerging wavefronts respectively become

A double slit experiment is performed with light of wavelength 500 nm. A thin film of thickness 2 pm and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will :

In Young's double slit experiment, the two slits act as coherent sources of equal amplitude A and wavelength $$\lambda$$. In another experiment with the same set up the two slits are same of equal amplitude of wavelength $$\lambda$$ but are incoherent. The ratio of intensity of light at the mid point of the screen in the first to the second case is?

In an ideal double-slit experiment, when a glass-plate $$(\mu = 1.5)$$ of thickness t is introduced in the path of one the interfering beams (wavelength $$\lambda$$), the intensity at the position where the central maximum occurred previously remains unchanged. The minimum thickness of the glass-plate is :

The resolving power of a microscope is

In Doppler Effect when the source is moving towards a observer at rest, the correct equation is:

The maximum numbers of possible interference maxima for slit separation equal to twice the wavelength in Young's double slit experiment is?