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Statement 1:

The centre of mass of a proton and an electron, released from their respective positions remains at rest

Statement 2:

The centre of mass remain at rest, if no external force is applied

a)

Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1

b)

Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1

c)

Statement 1 is True, Statement 2 is False

d)

Statement 1 is False, Statement 2 is True


Question ID - 54176 | Toppr Answer

Statement 1:

The centre of mass of a proton and an electron, released from their respective positions remains at rest

Statement 2:

The centre of mass remain at rest, if no external force is applied

a)

Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1

b)

Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1

c)

Statement 1 is True, Statement 2 is False

d)

Statement 1 is False, Statement 2 is True

1 Answer - 5876 Votes

3537

Answer Key : (a) -

(a)

Initially the electron and proton were at rest so their centre of mass will be at rest. When they move towards each other under mutual attraction then velocity of centre of mass remains unaffected because external force on the system is zero



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