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

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Master Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations is a core JEE Main Physics subtopic under Dual Nature of Matter and Radiation. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.

Key points

  • Understand the definition and scope of Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations in the JEE syllabus
  • Memorise key formulas and standard results linked to Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

  • Revise Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations with a one-page formula sheet before attempting mixed tests
  • After each practice set, log mistakes specific to Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations and reattempt after 48 hours

Common trap

Students often rush Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

Syllabus context

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

Free sample questions

Attempt 8 free MCQs for Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations. Unlock 11+ more with Pro.

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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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