bids are invited for to verify the existence of different harmonics and measure their relative amplitudes in a complex wave using cro , determination of energy band gap of silicon, germanium , demonstration of energy quantization using the franck hertz experiment , to determine wavelength, spot size, a divergence of laser, power distribution within the beam, grating element of the grating , to determine the wavelength of laser light using michelson interferometer experiment. , to study the magnetostriction effect in a metallic rod. , to determine the charge to mass ratio of an electron by using magnetron. , to determine the dielectric constant of dielectric material by varying frequency , to find out the gvalue using electron spin resonance , ujt characteristics, and its application as a relaxation oscillator , scr characteristics and its application as a switching device