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Figure shows the results of an experiment involving photoelectric effect. The graphs A,B,C,D relate to light beams having different wavelengths.

$\begin {array} {1 1} (a)\;Beam \: B\: has\: highest\: frequency & \quad (b)\;Beam\: C\: has\: longer \: wavelength \\ (c)\;All\: of\: these & \quad (d)\;Beam\: A\: has\: highest\: rate\: of \: photoelectron\: emission. \end {array}$

 

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Ans : (b)
Intercept on V axis is proportional to frequency.
Maximum intercept is for beam B. So, B has highest frequency.
C has minimum intercept, minimum frequency and hence maximum wavelength.
The highest peak is for beam A.

 

answered Dec 31, 2013 by thanvigandhi_1
edited Mar 13, 2014 by thanvigandhi_1
 

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