Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • The work function for caesium atom is 1.9 eV. Calculate (b) the threshold frequency of the radiation.

2.51    The work function for caesium atom is 1.9 eV. Calculate (b) the threshold frequency of the radiation.

Answers (1)

best_answer

To find threshold frequency:

W_{o} = h\nu_{o}

Where

h = Planck’s constant

\nu_{o} = threshold frequency

\nu_{o}= \frac{W_{o}}{h}

\nu_{o} =\frac{ [1.9\times1.602\times10^{-19}J] }{[6.626\times10^{-34}Js]}

     = \frac {3.0438\times10^{-19}J} { 6.626\times10^{-34}Js}

     = 4.5937\times10^{14} Hz

Posted by

Divya Prakash Singh

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE's 'please check your DM' replies draw attention as students flag portal issues
anam-khan

Parents' body questions CBSE's OSM rollout; seeks probe into evaluation process, teacher deployment
anam-khan

Overseas Class 12 student files plea in SC against CBSE over withheld improvement exam results

Latest Question