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Arago spot (D.F.J. Arago)
A bright spot which appears in the shadow of a uniform disc being backlit through monochromatic light emanating from a point source.
Explain the term 'resolving power' of an astronomical telescope. How does it get affected on 1. Enhancing the aperture of the objective lens? 2. Enhancing the wavelength of t
Insulators: Insulators are those substances which do not permit to pass electric current by them. e.g. Wood, Plastic, rubber, glass etc
Older people wear eye glasses with bifocal corrective lenses . What is the eye defect that necessitate this eye glasses ?
S uppose you have two parallel, metal plates that have an electric field between them of strength 3.0 x 10 4 N/C, and are 0.050 m apart. Consider a point, P, located 0.030 m fr
Why there are two propellers in helicopter
Whatn is Fusion
Q. Explain what do you understand by the terms potential well and potential barrier. How does a particle with energy lesser than the barrier height tunnels through its quantum mech
Consider air (ideal gas) as working substance inside a piston-cylinder device (closed system). This air undergoes a power cycle as shown in figure. Determine work output per unit m
COLLISION: "When two or more bodies come close to each other, so that there is some part of interaction among them, with or without the presence of external force, we say tha
Understand the manufacturing technique of optical fibres by using double crucible method. In double crucible method the inner platinum crucible has core material into molten fo
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