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Photoelectric Cell Photoelectric Cell Photoelectric cell is an electronic device which converts light energy into electrical energy. It is also called an electric eye or photo tube. Principle Photoelectric cell works on the principle of photoelectric effect. Construction Photoelectric cell consists of an evacuated glass tube in which there are two electrodes, emitter(C) and…
Particle nature of light (The Photon) Particle nature of light :- Photoelectric effect i.e. the ejection of electrons from a metal surface when light of suitable frequency falls on it, established the fact that light when interact with matter behaves as if it was made of quanta (packets of energy) each having energy hν,…
विकिरण तथा द्रव्य की द्वैत प्रकृति (Dual nature of Matter and Radiation notes in Hindi) प्रकाश विद्युत प्रभाव, कॉम्पटन प्रभाव और रमन प्रभाव आदि विकिरण की पदार्थ के साथ अन्योन्य क्रियाएं हैं, जिनकी प्रकाश के क्वांटम सिद्धांत (कण प्रकृति) द्वारा व्याख्या की जा सकती है, जबकि प्रकाश के कुछ अन्य प्रभाव जैसे परावर्तन, अपवर्तन, व्यतिकरण,…
Einstein photoelectric Equation Einstein explained the various laws of photoelectric emission on the basis of Planck’s revolutionary idea of Planck’s Quantum theory(year 1900) “Energy emitted or absorbed is not continuous, but it is in the form of packets of energy called quanta. One such quantum of radiation is called a photon which travels with…
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Failure of wave theory to explain photoelectric effect Failure of wave theory to explain photoelectric effect :- Huygen’s wave theory of light failed to explain the photoelectric effect because of the following reasons :- According to Wave theory of light, the energy of a beam of light is measured by the intensity of…
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Dual Nature of Matter & Radiation Dual Nature of Matter & Radiation :- Mutual interaction of radiation with substances such as Photoelectric effect(phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation) Compton effect(Compton scattering occurs when a photon interacts with an outer orbital electron. In…
लेसों के लिए चिन्ह परिपाटी .लेसों के लिए चिन्ह परिपाटी :- चिन्ह परिपाटी प्रतिबिम्ब निर्माण के गणितीय विश्लेषण के लिए प्रतिबिम्ब दूरी (v), बिम्ब दूरी (u), फोकल लंबाई (f), आदि के लिए चिन्ह निर्धारित करने के लिए नियमों का एक समूह है। इसके अनुसार :- वस्तु को हमेशा लेंस के बाईं ओर रखा…
Sign Convention of Lens Sign Convention of Lens :- Sign convention is a set of rules to set signs for object distance (u), image distance (v), focal length (f), etc. for mathematical analysis of image formation. According to it :- Object is always placed to the left of lens. All distances are measured from…
त्रुटि विश्लेषण त्रुटि (त्रुटि विश्लेषण) :- किसी भी मापक यंत्र द्वारा किए गए प्रत्येक माप के परिणाम में कुछ अनिश्चितता होती है। इस अनिश्चितता को त्रुटि कहा जाता है। वास्तविक मान और मापित मान :- माप में त्रुटियों की अवधारणा को समझने के लिए, दो पदों “वास्तविक मान” और “मापित मान” को जानना आवश्यक…
Error Analysis Error(Error Analysis) :- The result of every measurement by any measuring instrument contains some uncertainty. This uncertainty is called error. True Value and Measured Value :- To understand the concept of errors in measurement, one should know the two terms, “true value” and “measured value”. The true value is impossible to find…
