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Assertion: Charge is invariant. It means...

Assertion: Charge is invariant. It means the net charge of a system does not change even if the system is in a state of motion.
Reason: If `m_0` is the mass of a particle in state of rest then the mass of the particle changes according to speed (v) of particle and can be calculated using following relation.
`m=m_0/sqrt(1-v^2/c^2)`

A

If both assertion and reason are correct and reason is a correct explanation of the assertion .

B

If both assertion and reason are correct but reason is not the correct explanation of assertion

C

If assertion is correct but reason is incorrect

D

If assertion is incorrect but reason is correct.

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A charge q of mass m is projected form a long distance with speed v towards another stationery particle of same mass and charge the distance of closet approach of the particles is

    A
    `(q^(2))/(2piepsilon_(0)mv^(2))`
    B
    `(2q^(2))/(piepsilon_(0)mv^(2))`
    C
    `(3q^(2))/(2piepsilon_(0)mv^(2))`
    D
    `(q^(2))/(piepsilon_(0)mv^(2))`

  • A particle of charges Q and mass m travels through a potential difference V from rest. The final momentum of the particle is

    A
    `(mv)/(Q)`
    B
    `2Q sqrt(mV)`
    C
    `sqrt(2m QV)`
    D
    `sqrt((2QV)/(m))`

  • A particle of mass m moving with speed V collides eleastically with another particle of mass 2mFind speed of smaller mass after head on collision

    A
    `v/3`
    B
    `-v/3`
    C
    `(2v)/3`
    D
    `(-2v)/3`

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