When a light of frequency v_(1) is incident on a metal surface the photoelectrons emitted have twice the kinetic energy as did the photoelectron emitted when the same metal has irradiated with light of frequency v_(2). What will be the value of threshold frequency?

When a light of frequency v_(1) is incident on a metal surface the pho

1.	When a light of frequency v_(1) is incident on a metal surface the photoelectrons emitted have twice the kinetic energy as did the photoelectron emitted when the same metal has irradiated with light of frequency v_(2). What will be the value of threshold frequency?
Answer» `v_(0)=v_(1)-v_(2)` `v_(0)=v_(1)-2v_(2)` `v_(0)=2v_(1)-v_(2)` `v_(0)=v_(1)+v_(2)`. Answer :C