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Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations Revision for JEE

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Revise Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations by covering every subtopic once, drilling formulas, then solving 19+ timed MCQs with full solutions.

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Revision checklist

  1. 1.Core idea: Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations
  2. 2.Relates to other subtopics in Dual Nature of Matter and Radiation
  3. 3.Photoelectric effect, Einstein equation
  4. 4.de Broglie wavelength λ = h/p
  5. 5.Master Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations definitions and standard results
  6. 6.Solve 20 timed MCQs for Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations

Syllabus context

Part of Dual Nature of Matter and Radiation in JEE Main Physics.

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Q1PhysicsUnit 17: Dual Nature of Matter and Radiation
The incident photon involved in the photo-electric effect experiment ν>νo\nu>\nu_{o}
Q2PhysicsUnit 17: Dual Nature of Matter and Radiation
The work function of a substance is 4.0 eVe V. The longest wavelength of light that can cause photo-electric emission from this substance is approximately
Q3PhysicsUnit 17: Dual Nature of Matter and Radiation
The sensor is exposed for 0.1s0.1 s to a 200W200 W lamp 10m10 m away. The sensor has opening that is 20 mm in a diameter How many photons enter the sensor if the wavelength of light is 600 mm? (assume that all the energy of the lamp is given off as light).
Q4PhysicsUnit 17: Dual Nature of Matter and Radiation
The photoelectric effect proves that light consists of:
Q5PhysicsUnit 17: Dual Nature of Matter and Radiation
Work function is
Q6PhysicsUnit 17: Dual Nature of Matter and Radiation
Assertion Mass of moving photon varies inversely as the wavelength. Reason Energy of the particle == Mass ×\times (speed of light) 2^{2}
Q7PhysicsUnit 17: Dual Nature of Matter and Radiation
In a photoelectric effect, the anode potential is plotted against the plate current
Q8PhysicsUnit 17: Dual Nature of Matter and Radiation
The creation of voltage or electric current in a material upon exposure to light is termed as

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