AIPMT PRELIMS2001Physics-Electromagnetism
AIPMT PRELIMS 2001 Physics Thomson Mass Spectrograph MCQ Question
Type: MCQ-conceptual-Medium-Class 12
In Thomson mass spectrograph 𝐄 ⊥ 𝐁 then the velocity of undeflected electron beam will be :
A
|𝐄|/|𝐁|
B
𝐄 × 𝐁
C
|𝐁|/|𝐄|
D
𝐄²/𝐁²
Correct Answer
Option A
Detailed Explanation
For an electron beam to be undeflected in a Thomson mass spectrograph, the velocity v = E/B, where E is the electric field and B is the magnetic field.
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