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प्रश्न
How are X-rays produced?
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उत्तर
When a beam of cathode rays is made to fall upon hard metallic targets like tungsten, X-rays are produced.
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संबंधित प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
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|
Atoms |
Mass No |
Atomic No. |
|
A |
40 |
20 |
|
B |
19 |
9 |
|
C |
7 |
3 |
|
D |
16 |
8 |
|
E |
14 |
7 |
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(i) contains 7 protons
(ii) has electronic configuration 2,7
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Choose the odd one out and write the reason:
