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Q. State any three uses of IR rays.
(a) Infrared lamps are utilized in physiotherapy.
(b) Infrared photographs are utilized in weather forecasting.
(c) As infrared radiations aren't absorbed by thick fog, air, mist and so on they are used to take photograph of long distance objects.
(d) Infra red absorption spectrum is utilized to study the molecular structure.
Describe how tunneling takes place in reversed bias When junction is reversed biased, p-region moves up with respect to the n-region as a result, filled energy levels on p- sid
What is dychroic filter? A thin flat piece of glass along with a metal deposition in one of the surfaces applied into a high vacuum environment. There metal layer, only some at
Briefly explain the conditions for clear vision of interference fringes.
What do you mean by the phase difference between incident and reflected waves at a) an open end and b) closed end? What happens to the fundamental frequency of a stretched strin
Illustrate a labelled diagram of Hertz's experimental set-up to produce electromagnetic waves. Describe the generation of- electromagnetic waves using this set-up.
Energy Conservation on an Incline In the given case of the cart rolling down predispose and there are three external forces (the general force, the force of friction and air re
When royce was 10 years old he had a mass of 30kg by the time he was 16 years old his mass increase to 60kg how much larger is the gravitational force between royce and earth at a
Gaia hypothesis (J. Lovelock, 1969): The idea that as a whole Earth should be regarded as a living organism & that biological procedure stabilize the environment.
why the least distance of distinct vision is 25 %
Derive a mathematical expression for the magnetic induction at a point on the axial line of a bar magnet. Derive a mathematical expression for the magnetic induction at a point
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