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

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Short tricks for Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.

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  • Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations focus drill

    Solve 15 mixed MCQs for Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations, review every explanation, and note formulas you hesitated on.

  • Dimensional check first

    Before solving, verify each term has consistent SI dimensions — eliminates wrong options quickly in JEE MCQs.

  • Limiting cases

    Substitute extreme values (t→0, m→∞, θ→0) to sanity-check your final expression.

Syllabus context

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

Free sample questions

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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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