A double slit of separation 1.5 mm is illuminated by white light (between 4000 and 8000 `Å`). On a screen 120 cm away colored interference pattern is formed. If a pinhole is made on this screen at a distance of 3.0 mm from the central white fringe, some wavelengths will be absent in the transimitted light. Find the second longest wavelength (in `Å`) which will be absent in the transmitted light.

A double slit of separation 0.1 mm is illuminated by white light. A coloured interference pattern is formed on a screen 100 cm away. If a pin hole is located in this screen at a distance of 2 mm from the central fringe, the wavelength in the visible spectrum (4000 Å to 7000Å) which will be absent in the light transmitted through the pin hole is (are)

A double slit of separation 0.1 mm is illuminated by white light. A coloured interference pattern is formed on a screen 100 cm away. If a pin hole is located in this screen at a distance of 2 mm from the central fringe, the wavelength in the visible spectrum (4000 Å to 7000Å) which will be absent in the light transmitted through the pin hole is (are)

In Young's double slit experiment the slits apart by 3 mm are illuminated with a source of monochromatic light of wavelength 6000 Å. Interference fringes are obtained on a screen at a distance of 1 m from the slits . The width of the fringe will be

White coherent light (400 nm-700 nm) is sent through the slits of a Youngs double slit experiment. The separation between the slits is 05 mm and the screen is 50 cm away from the slits. There is a hole in the screen at a point 1.0 mm away (along the width of the fringes) from the central line. (a) Which wavelength(s) will be absent in the light coming from the hole ? (b) which wavelength(s) will have a strong intensity ?

Two slits separated by 0 . 5 mm are illuminated by light of wavelength 500 nm . The screen is at a distance of 120 cm from the slits . The phase difference between the interfering waves at a point 3 mm on the screen from the central bright fringe is . . . . .

In Yonung's double-slit experiment, two slits which are separated by 1.2 mm are illuminated with a monochromatic light of wavelength 6000 Å The interference pattern is observed on a screen placed at a distance of 1 m from the slits. Find the number of bright fringes formed over 1 cm width on the screen.

In Yonung's double-slit experiment, two slits which are separated by 1.2 mm are illuminated with a monochromatic light of wavelength 6000 Å The interference pattern is observed on a screen placed at a distance of 1 m from the slits. Find the number of bright fringes formed over 1 cm width on the screen.

The width of central fringe of a diffraction pattern is 5.8 mm on a screen at a distance 2m. If light source has wavelength 5800 Å then the slit width