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In the nucleus of 20 Ca 40 there are: (1) 40 protons and 20 electrons (2) 20 protons and 40 electrons (3) 20 protons and 20 neutrons (4) 20 protons and 40 neutrons
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
How CPH takes spin and converts to graviton? Answer- A CPH Principle says a CPH moves with constant speed as Vc, Vc>c in any inertial frame and any space, therefore that
A plane monochromatic wave travelling in a homogeneous medium goes into a denser medium. What are the changes in (i) Frequency (ii) amplitude (iii) speed of propagation & (iv) Phas
Reducing friction with pencils Place round pencils under a heavy box. Join a string to the box and find the force required to move it across a table. Search the force needed to
Free Expansion process: In free expansion of gas, the gases enlarge in vacuum. Thus, work done Δw=0 In free expansion if state changes from 1 → 2 only the initial and final s
Chain Reactor: Splitting of nuclei also causes the emission of neutrons. If these neutron cause further fission in the other nuclei and this process continues, then it is known
A 10 V ZENER DIODE ALONG WITH A SERIES RESISTOR IS CONNECTED ACROSS A 40 V SUPPLY.CALCULATE THE MINIMUM VALUE OF THE RESISTOR REQUIRED,IF THE MAXIMUM ZENER CURRENT IS 50 mA?
is average speed the magnitude of average velocity?justify your answer with a suitable example?
Can several fibers gives the same amount of light? No, some fibers do not give similar amount of light. If a no. of fibers or light guides are coupled similar illuminator, this
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