Define Interference. Derive expression for fringe width in Young' double slit experiment.

Explain Young's Double Slit Experiment.

Define strain energy. Derive three expressions for strain energy

Derive an expression for fringe width for Bright and Dark bands.

A beam of light consisting of two wavelengths, 650 nm and 520 nm is used to obtain interference fringes in a Young's double-slit experiment. If distance between slit and screen is 1.2 m and distance between two-slits is 2 mm. Find the distance of the third bright fringe on the screen from the central maximum for wavelength 650 nm.

A beam of light consisting of two wavelengths, 650 nm arid 520 nm is used to obtain interference fringes in a Young's double-slit experiment. If distance between slit and screen is 1.2 m and distance between two-slitsis 3 mm. What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide?

Define Strain Energy. Derive expressions for (i) work done per unit volume (ii) Strain energy per unit volume. OR Derive an expression for strain energy per unit volume of the material of a wire.

Define horizontal range. Derive the necessary expression for it.

If the monochromatic source in Young’s double slit experiment is white light, then

Explain Young's Modulus. Derive an expression for the same. OR Whatis young'smodulus?Describe anexperiment to find out young's modulus of material, in the form of a long string wire.

Define escape velocity. Derive an expression for the escape velocity of an object from the surface of the earth. OR Define escape velocity of a body at rest on the earth's surface. Obtain an expression for the same and show that it is independent of the mass of the body. OR Define escape velocity of the body. Obtain an expression for the escape velocity when the body is at rest on the surface of the earth and show that it is independent of the mass of the body.