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A charged particle with charge to mass r...

A charged particle with charge to mass ratio `((q)/(m)) = (10)^(3)/(19) Ckg^(-1)` enters a uniform magnetic field `vec(B) = 20 hat(i) + 30 hat(j) + 50 hat(k) T` at time t = 0 with velocity `vec(V) = (20 hat(i) + 50 hat(j) + 30 hat(k)) m//s`. Assume that magnetic field exists in large space.
During the further motion of the particle in the magnetic field, the angle between the magnetic field and velocity of the particle

A

remains constant

B

increase

C

decrease

D

may increse or decrease

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • If vec(a) = hat(i) - 2 hat(j) + 3 hat(k) and vec(b) = 2 hat(i) - 3 hat(j) + 5 hat(k) , then angle between vec(a) and vec(b) is

    A
    `(pi)/(2)`
    B
    `(pi)/(2)`
    C
    `(pi)/(6)`
    D
    `pi`

  • If vec(a) = hat(i) + hat(j) + hat(k), vec(a).vec(b) =1 and vec(a) xx vec(b) = hat(j)-hat(k) , then the vector vec(b) is

    A
    `hat(i)-hat(j)+hat(k)`
    B
    ` 2 hat(i)-hat(k)`
    C
    `2 hat(i)`
    D
    `hat(i)`