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Young's experiment; double-slit experiment (T. Young; 1801):
A popular experiment which illustrates the wave nature of light (and indeed of other particles). Light is passed from a small source over an opaque screen along two thin slits. The light is diffracted from these slits & generates an interference pattern on the other side of the screen.
Draw the final image formed by two lenses: An optical imaging system consists of two positive lenses (L1 and L2). L1 has a focal length f 1 = 10 cm, and L2 has a focal length
Define the term multi-mode fibre shortly. Multi-mode fibre: This type of fibre permits more than one mode to travel by this. As this has to permit more number of modes to tr
An x-ray photon collides with a free electron, and the photon is scattered. During this collision there is conservation of: a) momentum but not energy b) neither moment
Which quantity is unchanged during refraction of light? Describe critical angle. Show an application of total internal reflection.
Are fibers optics systems expensive? To find out whether a system is expensive one would have to establish a comparison with an option, which in most cases doesn't exist. To co
HYSTERESIS LOOP: A ferromagnetic material retains some magnetism after the magnetising force is removed. The BH curve (O to Q) will therefore only be followed once, on initial
why phase is defined only for periodic motion ?
How michelson interferometer is used to determine the wavelength difference between the D1 and D2 lines of sodiun
What is a Temperature Scales? Fahrenheit, Celsius and Kelvin were scientists who studied how heat and temperature work. The most familiar scale to Americans (until the time tha
Write about the main features in which Fresnel and Fraunhoffer approaches of diffraction differ? Mention some (at least four) applications of diffraction.
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