In a photoelectric experiment, two metal...

In a photoelectric experiment, two metal pairs plates A and B are used for a given light intensity I and frequency f. work function of metal B is more than that of A. The correct variation of stopping potential difference versus frequency is given by:

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In a photoelectric experiment light of different wavelengths are used on a metal surface. For each wavelength the stopping potential difference is recorded. The given graph shows the variation of stopping potential difference (V_(s)) versus the wavelength (l) of light used. Find the value of V_(0) shown in the graph. Given h = 4 × 10^(–15) eV s and c = 3 × 108 ms^(–1) .

A photoelectric experiment is performed at two different light intensities I_(1) and I_(2) (I_(2) gt I_(1)) . Choose the correct graph showing the variation of stopping potential versus frequency of light.

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Graph between stopping potential and frequency of photon is given in figure Find out work function of metal:

When a high frequency electromagnetic radiation is incident on a metallic surface, electrons are emitted from the surface. Energy of emitted photoelectrons depends only on the frequency of incident electromagnetic radiation and the number of emitted electrons depends only on the intensity of incident light. Einstein's protoelectron equation [K_(max)=hv-phi] correctly ecplains the PE, where upsilon= frequency of incident light and phi= work function. Q. For photoelectric effect in a metal, the graph of the stopping potential V_0 (in volt) versus frequency upsilon (in hertz) of the incident radiation is shown in Fig. The work function of the metal (in eV) is.

The photoelectric work function of the emitter of a photocell is 3.63 eV . The frequency of incident light radiation if the stopping potential of the emitter is 3 volt , is

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In a photoelectric experiment, a monochromatic light is incident on the metal plate A. It was observed that with V = 5 "volt" , the maximum kinetic energy of photoelectrons striking plate B was 1 eV . The polarity of the applied potential difference was as shown in figure (a). With polarity of the applied potential difference reversed (as shown in figure (b)) and frequency of incident light doubled, it was observed that in saturation state, the kinetic energy of electrons striking plate B ranged between 5 eV to 20 eV. Find the work function of metal used in plate A.

PHYSICS GALAXY - ASHISH ARORA-PHOTOELECTRIC EFFECT AND MATTER WAVES-Conceptual MCQ

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