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Alpha particle is the nucleus of an atom of:

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Important Questions on Physics

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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 273
The unit of radioactivity is _____.
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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 274
In the nuclear reactors, moderators are used to:
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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 275
Which one of the following is not radioactive?
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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 276
The penetrating powers of α,β and γ radiations, in decreasing order are
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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 277
The phenomenon of radioactivity was discovered by:
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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 278

The efforts to detect the existence of Higgs Boson particle have become frequent news in the recent past. What is/are the importance/importances of discovering this particle?

I. It will enable us to understand as to why elementary particles have mass.

II. It will enable us in the near future to develop the technology of transferring matter from one point to another without traversing the physical space between them.

III. It will enable us to create better fuels for nuclear fission.

Select the correct answer using the codes given below:

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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 279
An atomic pile is used for 
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IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 1 - Physics>Assessment>Q 280

Match the following lists.

List I List II
A. Germanium at OK 1. n-type semiconductor
B. Germanium at room temperature 2. p-type semiconductor
C. Germanium doped with indium 3. Insulator
D. Germanium doped with arsenic 4. Intrinsic semiconductor

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