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The average distance of an electron in an atom from its nucleus is of the order of: (1) 10 6 m (2) 10 -6 m (3) 10 -10 m (4)10 -15 m Ans: (3) 10 -10 m
The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage the power are 220 V and 1100 W respectively. Calculat
a beam of electron is incident on barrier 6eV high and 0.2 nm wide. find the energy in eV these should have if 1% of them are to get through the barrier.
2. The dipole in problem is removed and the space between plates is filled with Cu of conductivity σ (look up the value). (a) Derive an expression for the current density betwee
A ball is 6.5 m from a convex mirror with a magnification of 0.75. If the image is 0.25 m in diameter. What is the diameter of the actual ball?
The amplified video signals are amplitude modulated using a suitable r.f. carrier wave in a transmitter called ‘AM' picture transmitter. Similarly, the amplified audio signals are
1. Sodium dodecyl sulfate is a detergent with a charged hydrophilic sulfate head group and a 12 carbon hydrocarbon tail. In solid form it exists as a monomeric molecule but upon
SPEED: The distance covered by a body in unit time is known as speed. It is represented by V.
theory to write the process of finding of neutral point of a bar magnet
Q The refractive index of a medium is √3. Compute the angle of refraction if the un-polarised light is incident on it at the polarizing angle of the medium. μ = tan i p = √3
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