A metal is irradiated with a radiation of wavelength 300 nm. Then photo electrons found to have velocity of 3.7 xx 10^5 m/s. When a graph is drawn between K.E of photo electrons and frequency of radiation a straight line is obtained cutting X-axis. The value of X-intercept

A metal is irradiated with a radiation of wavelength 300 nm. Then phot

1.	A metal is irradiated with a radiation of wavelength 300 nm. Then photo electrons found to have velocity of 3.7 xx 10^5 m/s. When a graph is drawn between K.E of photo electrons and frequency of radiation a straight line is obtained cutting X-axis. The value of X-intercept
Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/9xx10-1938449" style="font-weight:bold;" target="_blank" title="Click to know more about 9XX10">9XX10</a>^4 `Hz<br/>`10.2xx10^5` Hz<br/>`8.6xx10^5` Hz<br/>`9xx10^(14)` Hz</p>Solution :`<a href="https://interviewquestions.tuteehub.com/tag/e-444102" style="font-weight:bold;" target="_blank" title="Click to know more about E">E</a> = (hc)/(lambda) = 6.625 xx 10^(-19) J , KE =6.23xx10^(-<a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a>)J` <br/><a href="https://interviewquestions.tuteehub.com/tag/w-729065" style="font-weight:bold;" target="_blank" title="Click to know more about W">W</a>`= E- KE= 6.002 xx 10^(-19)`<br/>`hv_0 = 6.002xx10^(-19) impliesv_0 = 9.09xx10^(14) Hz`</body></html>