Home
Class 11
CHEMISTRY
the threashold frequency v(0) for a meta...

the threashold frequency `v_(0)` for a metal is `7xx10^(14)s^(-1)` . Calculate the kinetic energy of an electron emitted when radiation of fequency `v = 1.0 xx 10^(15)s^(-1)` hits the metal .

A

`1.988 xx 10^(-17)` J

B

`1.9 88 xx 10^(19)` J

C

`3.988 xx 10^(-19)` J

D

`1.988 xx 10^(-19)` J

Text Solution

Verified by Experts

The correct Answer is:
D
`hv = hv_(0) + kE, K. E = h(v-v_0)`
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV H-SPECTRUM|7 Videos

  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV BOHR.S ATOMIC MODEL|4 Videos

  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV ELECTROMAGNETIC RADIATION|12 Videos

  • STATES OF MATTER

    NARAYNA|Exercise A & R TYPE QUESTIONS|16 Videos

  • THERMODYNAMICS

    NARAYNA|Exercise Assertion- Reason|5 Videos

Similar Questions

Explore conceptually related problems

The threshold frequency v_(0) for a metal is 7xx10^(14)s^(-1) . Calculate the kinetic energy of an electron emitted when radiation of frequency v = 1.0 xx 10^(15)s^(-1) hits the metal .

The threshold frequency nu_(0) for a metal is 6xx10^(14) s^(-1) . Calculate the kinetic energy of an electron emitted when radiation of frequency nu=1.1xx10^(15) s^(-1) hits the metal.

The threshold frequency, v_(0) , of a metal is 6.7xx10^(14)s^(-1) . Calculate the maximum kinetic enegry of a single electron that is emitted when a radiation of frequency v = 1.0 xx 10^(-15)s^(-1) strikes the metal. Strategy: Use the relatiship between v_(0),v, and KE given in Eq.

The threshold frequency v_(0) for a metal is 8 xx 10^(14) s^(-1) . What is the kinetic energy of an electron emitted having frequency v=1.0 xx 10^(15) s^(-1)

" Treshold frequency for a metals is "5times10^(-14)S^(-1)" .Calculate the K.E.of excited electron when radiation of frequency "v=3times10^(15)S^(-1)

Calculate the energy of photon of radiations whose frequency is 5xx10^(14)" s"^(-1) .

When a certain metal was irradiated with light of frequency 4.0 xx 10^(19)s^(-1) the photoelectrons emitted had three times the kinetic energy as the kinetic energy of photoelectrons emitted when the metal was irradited with light of frequency 2.0 xx 10^(16) s^(-1) .Calculate the critical frequency (v_(0)) of the metal