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In a perfect instrument the zeros of the major scale and circular scale coincides with each other, in that situation screw gauge has zero-error, or else the measurement device is said to have zero-error which is similar to the cap reading with the gap closed. This error is positive when value is zero line or reference line of the cap lies above the line of graduation and corresponding corrections will be just opposite or vice-versa.
What do you mean by normal adjustment of a telescope? In What way it is better? What is the need of erecting lens in a terrestrial telescope? What do you mean by its magnific
What is an optical port? In the fiber optics industry, optical port is the component that physically produces the connection or interface in between the harness and the illumin
Q. What is ionisation potential energy? For hydrogen atom the energy necessary to remove an electron from first orbit to its outermost orbit (n=∞) is 13.6-0 = 13.6eV. This ene
State Kirchhoff's rules of current distribution in an electrical network. Using these rules verify the value of the current in the electric circuit given below.
how Michelson interferometer can be used to measure the wavelength of sodium light.
Standing Wave Formation Below given animation depicts two waves moving by a medium in opposite directions. The blue wave is moving to the right and the green wave is moving to
one coin is thrown upword from 100m top building with velocity 15m/s .2s later 2nd coin is dropped downword at what distance from top of building 2nd coin cross first? Ans) They
Q. Define: 1 amu One atomic mass unit is thinks as one twelfth of the mass of carbon atom 6 C 12 . 1 amu = 1.66 X 10 -27 kg. Q. Define: mass defect. The dissimi
Light is able to travel through vacuum Ans: In classical physics electromagnetic radiation (light) is the only kind of wave that doesn't need a medium. For sound rays in a
why gravitational energy for a system of particles is found by first finding the gravitational energy between individual particles and then adding it up? Ans) It is a scalar qua
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