Question

An electron at rest is accelerated by a potential 'V₁', in uniform field experiences a force 'F₁'· When potential is changed to 'V₂', the force experienced by the electron gets doubled. The ratio of V₁ to V₂ is ______.

विकल्प

• 1 : 4

• 4 : 1

• 1 : 2

• 2 : 1

Answer 1

An electron at rest is accelerated by a potential 'V₁', in uniform field experiences a force 'F₁'· When potential is changed to 'V₂', the force experienced by the electron gets doubled. The ratio of V₁ to V₂ is 1 : 2.

Explanation:

`"F"_1 = "eV"_1/"d"   2"F"_1 = "eV"_2/"d"`

`"V"_1/"V"_2 = 1/2`