draw graph showing variation of photoelectric current with applied voltage for two identical radiation of equal frequency and different intensity mark the graph for the radiation of higher intensity
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Pulsed echo ultrasonic flaw detector works on the principle of reflected signal indication. The ultrasonic pulse uses high frequencies of 0.8 to 2.5 MHz for inspection of steel, Alluminium and Brass articles. But uses lower frequencies for inspection of plastic goods etc. Generally, a single prob or transducer is used.
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The photoelectric current is the emission of electrons when light hits the material.
Explanation:
Graph showing variations of photoelectric current with applied voltage for two incident radiations of equal frequency and different intensities:
Attachments:
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