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322 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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322 questions

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Question 161

neco 2000

The helium isotope \(^3_2He\)

Ahas three pro tons and two neutrons

Bhas two protons and one neutron

Chas two protons and three neutrons

Dhas one proton and two neutrons

Ecannot exist because it has the same mass number as tritium

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Question 162

neco 2000

A particle of charge q and mass m moving with a velocity v enters a uniform magnetic field B in the direction of the field. The force on the particle is

ABqv

BBq\(\frac{v}{m}\)

CBqvm

Dmv\(\frac{B}{q}\)

E\(\frac{mv}{Bq}\)