| ASSERTION: If an electron while coming vertically from outer space enters the earth's magnetic field, it is deflected towards west. |
| REASON: Electron has negative charge |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: B
Solution :
We know that the direction of earth's magnetic field is toward south and the velocity of electron is vertically downward. Applying Fleming's left hand rule, the direction of force is towards west. Therefore, an electron coming from outer space will be deflected towards west.
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