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Q. What percentage of a given radioactive substance will be left after 5 half -life periods?
The residual part of radioactive substance = ( ½ ) 5
Therefore the percentage of remaining part of radioactive substance
= ( ½ ) 5 X 100% = 3.125 %
Q. What are the limitations of electron microscope? An electron microscope is operated merely in high vacuum. This prohibits the utilize of the microscope to study living organ
how to study the earth''s magnetic field using a tangent galvanometer?
why raise in ppotential is taken as positive
zeener diode definatoin
Micrometer Simulation A Micrometer is used to measure the external dimensions of objects that are 3 cm or smaller, this provides precise measurements to inside 0.01 mm. The
The nucleus of the element having atomic number 25 and atomic weight 55 will contain : (1 )25 protons and 30 neutrons (2) 25 neutrons and 30 protons (3) 55 protons (4)
What is a neutron? A neutron is a subatomic particle. Neutron is one of the building blocks of the atom. It has a mass of about 1.675 x 10-27 kg. Its spin is + 1/2 and that
Natural and forced vibrations When we strike a tuning fork with a rubber hammer it vibrates with certain frequency. The frequency does not change even if we hit it harder.
Q. State Maxwell's right hand cork screw rule. Maxwells's right hand cork screw rule: If a right handed cork screw is turn to advance along the direction of the curren
ZENER DIODE: It is a two terminal semiconductor junction device with a very sharp voltage breakdown at reverse bias applied. The device is utilized to give a voltage reference.
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