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Chlorine atom differs from chloride ion in the number of: (1) Proton (2) Neutron (3) Electrons (4) Protons and electrons Ans: Electrons
construction & working.
The waves which do not needs medium for their propagation are known as non- mechanical or electromagnetic waves. Examples : Light, heat (Infrared), radio waves, gamma- rays, X-r
A cube of side ‘a' is moving with speed 0.6 c normal to one of its face. What is its volume observed by an observer stationed on the earth ? The volume of cube = a x a x a = a 3
Disadvantages of A.C. Transmission of power 1. An a.c. line needs more copper than a d.c. line. 2. The construction of an a.c. transmission line is more complex than d.c. tr
A lead bullet moves horizontally with a velocity of 130 ms-1 and embedded into a cement wall after collision. If the specific heat capacity of lead = 130 JKg-1°C-1 and all heat pro
Light from a monochromatic source of wavelength 4000A 0 is incident on a grating having 5000 rulings / cm. The spectrum is focused on a screen by a lens of focal length
Biot-Savart law (J.B. Biot, F. Savart) A law defines the contributions to a magnetic field through an electric current. This is analogous to Coulomb's law. Mathematically spec
Highest electrical resistivity exists in which wire??? nichrome wire.
The magnetic vector potential in a specific region is a constant vector having magnitude 4πX10 5 units and points along the positive x-axis. What is the magnitude of the magnetic
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