Wave Optics Tes...

In the ideal double slit experiment, when a glass plate of refractive index 1.5 and thickness t is introduced in the path of one of the interfering beams of wavelength λ, the intensity at the position of central max. remains unchanged . Minimum thickness of glass plate is

An astronaut is looking down on earth’s surface from a space shuttle at an altitude of 500 km. Assuming that the astronaut’s pupils’ diameter 5 mm and the wavelength of visible light is 500 nm, the astronaut will be able to resolve linear objects of the size of about

When an unpolarized light of intensity I₀ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

In Young’s double slit experiment, intensity at a point is (1/4) of the maximum intensity Angular position of this point is

A beam of electron is used in a YDSE experiment. The slit width is d .When the velocity of electron is increased,then

In case of linearly polarised light, the magnitude of electric field vector

When the angle of incidence on a material is 60^o, the reflected light is completely polarized. The velocity of the refracted ray inside the material in m/s is

A glass slab of thickness 8 cm contains the same number of waves as 10 cm of water when both are traversed by the same monochromatic light. If the refractive index of water is 4/3, the refractive index of glass is

When an unpolarised light of intensity I₀ is incident on a polarising sheet, the intensity of the light which does not get transmitted is

Two coherent point sources S₁ and S₂ are separated by a small distance d as shown in the figure. The fringes obtained on the screen will be