Photocurrent vs collector potential for different intensitiesविभिन्न तीव्रताओं के लिए प्रकाश-विद्युत धारा बनाम संग्राहक विभवPhotocurrent vs collector potential for different intensities
NCERT Fig 11.3 · Class 12 Physics · Chapter 11 · interactive diagram
Read Chapter 11 with this diagramइस डायग्राम के साथ अध्याय 11 पढ़ेंIs diagram ke saath Ch 11 padhiyeAll Physics diagramsसभी भौतिकी डायग्रामSaare Physics diagrams
Parts and what they mean
- Intensity I₁ (lowest) (तीव्रता I₁ (न्यूनतम)) — Fewest photoelectrons per second, so the lowest saturation current.
- Intensity I₂ (तीव्रता I₂) — Medium intensity: medium saturation current, same stopping potential.
- Intensity I₃ (highest) (तीव्रता I₃ (अधिकतम)) — Most photoelectrons per second, so the highest saturation current.
- Stopping potential −V0 (निरोधी विभव −V0) — The same for all three intensities: V0 (and Kmax = eV0) does not depend on intensity.
- Saturation current (संतृप्त धारा) — Reached when all emitted photoelectrons reach A; proportional to intensity.
- Retarding (negative) potential on A (A पर मंदक (ऋणात्मक) विभव) — A is negative w.r.t. C: electrons are repelled; only the more energetic ones reach A.
- Accelerating (positive) potential on A (A पर त्वरक (धनात्मक) विभव) — A is positive w.r.t. C: electrons are attracted; current rises and then saturates.
- Collector plate potential (संग्राहक प्लेट विभव) — Potential of A with respect to C.
- Photocurrent (प्रकाश-विद्युत धारा) — Measured by the microammeter.
Original diagram drawn by Simple Learning Hub, based on NCERT Fig 11.3. Report a mistake