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प्रश्न
Give one example of isobars.
उत्तर
`""_11^23Na` and `""_12^23Mg` are isobar having same mass number 23 and different atomic numbers.
संबंधित प्रश्न
Name the radiations which are absorbed by greenhouse gases in the earth’s atmosphere.
Complete the diagram as given above by drawing the deflection of radioactive radiations in an electric field
State any two precautions to be taken while handling radioactive substances
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 electromagnetic radiation is used for photography in fog. [2]
(i) Identify the radiation.
(ii) Why is this radiation mentioned by you, ideal for this purpose ?
A radioactive source emits three types of radiations. Name them.
(i) Name the radiations which are charged.
(ii) Name the radiations which are most penetrating.
(iii) Name the radiations which travel with the speed of light.
(iv) Name the radiations which have the largest mass.
Define the term radioactivity. Of the three normally occurring radioactive radiations:
(a) Which has a positive charge?
(b) Which is most penetrating?
(c) Which has no electric charge?
Name two radioactive substances.
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
