(1) Name the radioactive radiations which have the least penetrating p

1.	(1) Name the radioactive radiations which have the least penetrating power. (2) Give one use of radioisotopes. (3) What is meant by background radiation?
Answer» 1. α rays have the least penetrating power. 2. Radioisotopes are used to study the function of fertilizer for different plants. They have also been used for developing new species of a plant by causing genetic changes. 3. Background radiations are present at all places even in the absence of any radioactive source. The radiations are present in the atmosphere even when there is no source nearby. The source of background radiations are : (a) cosmic radiation (b) rocks in the earth which contain traces of radioactive substances (c) naturally occurring radioisotopes.

(1) Name the radioactive radiations which have the least penetrating power. (2) Give one use of radioisotopes. (3) What is meant by background radiation?

Answer»

1. α rays have the least penetrating power.

2. Radioisotopes are used to study the function of fertilizer for different plants. They have also been used for developing new species of a plant by causing genetic changes.

3. Background radiations are present at all places even in the absence of any radioactive source. The radiations are present in the atmosphere even when there is no source nearby. The source of background radiations are :

(a) cosmic radiation

(b) rocks in the earth which contain traces of radioactive substances

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