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the electrons have more energy than the light particles
the velocity of electron is smaller than that of visible light
the wavelength of electrons is smaller as compared to the wavelength of visible light
it uses more powerful lenses
An electron microscope gives higher magnifications than an optical microscope because:
An empty vessel is partially filled with water. The frequency of vibration of air column in the vessel
An energy source will supply a constant current into the load if its internal resistance is
An example of replenishable energy source is
An image formed by a plane mirror could not be obtained on a screen. Such an image is called a/an_
An image formed by a plane mirror, that cannot be obtained on a screen is called _
An induction motor is
An instrument called ―Theodolite‖ is used in which among the following ?
An instrument has two strings. Both have the same length and are uniform. One of the strings is under twice as much tension as the other and also twice the mass of the other. Then which among the given statements is true?
An iron needle floats on the surface of water. What is the reason for this phenomenon?