A point is situated at 6.5 cm and 6.65 cm from two coherent sources. Find the nature of illumination at the point if wavelength of light is 5000 Å.

A point is situated at 6.5 cm and 6.65 cm from two coherent sources . Find the nature of illumination at the point if wavelength of light is 5000 overset (@)(A) .

A point p is situated 90.50cm and 90.58 cm away from two coherent sources. The nature of illumination of the point p of the wavelength of light is 400Å is,

A point P is situated at 40.1 cm and 40.2 cm away from two coherent sources. If the wavelength of light used is 5000 Å, then the point P

Point A is situated at a distance of 6.5 cm from the centre of a circle. The length of tangent drawn from point A to the circle is 6 cm. What is the radius of the circle?

Two small angled transparent prisms (each or refracting angle A = 1^(@)) are so placed that their bases coincide, so that common base is BC. This device is called Fresnel's biprism and is used to obtain coherent sources of a point source S illuminated by monochromatic light of wavelength 6000 Å placed at a distance a = 20 cm. Calculate the separation between coherent sources. If a screen is placed at a distance b = 80 cm. from the device, what ist the finge which of fringes obtained (Refractive index of material of each prism = 1.5.)

Two small angled transparent prisms (each or refracting angle A = 1^(@)) are so placed that their bases coincide, so that common base is BC. This device is called Fresnel's biprism and is used to obtain coherent sources of a point source S illuminated by monochromatic light of wavelength 6000 Å placed at a distance a = 20 cm. Calculate the separation between coherent sources. If a screen is placed at a distance b = 80 cm. from the device, what ist the finge which of fringes obtained (Refractive index of material of each prism = 1.5.)

In young's double slit experiment the distance between two sources is 0.1//pimm .the distance of the screen from the source is 25cm .wavelength of light used is 5000Å .Then the angular position of the first dark fringe is-