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(i) Lead balls are spherical in shape.
(ii) Rain leaves and a globule of mercury placed on glass plate are spherical.
(iii) Hair of shaving painting brush, when goes in water spread out, but as soon as it is taken out. Its fur sticks together.
(iv) A greased needle saved gently on the free surface of water in a beaker does not sink.
(v) Likewise, insects may go on the free area of water without drowning.
(vi)Bits of computer gum go irregularly when engaged on water surface.
What is index fiber? How you define the modes in an optical fiber? Give a relation between core diameter and numerical aperture. Ans.: The index profile of a single mode fi
time dependent magnetic flux that is changing from t=0 to t=torque varies as the flux is passing through stationary coil that has electrical resistance R. Find the amount of heat e
brewesters law
FARADAYS LAW: When the magnetic flux through the coil is made to vary, an emf is induced in the coil. The magnitude of the induced emf is proportional to the rate of change of
Microwaves and Radio waves: Microwaves are produced by high frequency electromagnetic oscillators in electric circuits. Microwaves are electromagnetic waves with wavelengths i
8. System is shown in the figure. Assume that cylinder remain is contact with the two wedges. Find the speed of cylinder at the given instant cylinder
Define the working of Optical-Fiber Infrasound Sensors. Optical-Fiber Infrasound Sensors: An OFIS comprises a sealed hose and a fiber-optic Mach-Zehnder interferometer
What do you mean by amplification factor of a triode valve
The fringe width in a Young's double slit arrangement is 0.008cm. What could be the fringe width if the slit separation is halved and the screen slit distance is doubled?
what are the necessary conditions for a body to execute simple harmonic motion?
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