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संबंधित प्रश्न
Name the unit in which the work function of a metal is expressed.
Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown below in the diagram. The arrows show the path of the radiation A, B and C. Answer the following questions in terms of A, B and C.
1) Name the radiation B which is unaffected by the electrostatic field.
2) Why does the radiation C deflect more than A?
3) Which among the three causes the least biological damage externally.
4) Name the radiation which is used in carbon dating.
An element P disintegrates by α - -emission and the new element suffers two further disintegrations, both by β -emission, to form an element Q. Explain the fact that P and Q are the isotopes.
How is a cathode ray tube used to convert an electrical signal into a visual signal?
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
What is the value of the speed of gamma radiations in air or vacuum?
Mention one important function of ear main parts:
State the principle on which the functioning of a nuclear reactor is based.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
