KCET Dual Nature of Matter and Radiation Weightage 2025

KCET Dual Nature of Matter and Radiation Weightage 2025: KCET Dual Nature of Matter and Radiation is one of the chapters which holds approximately 1-2 % of the weightage of the Physics Section. Candidates can expect 2 to 3 questions from this topic, which is equivalent to 2 to 3 marks. To secure the same, it is always advised to focus on solving conceptual questions, and numerical problems, along with theory-based questions.

As per the KCET syllabus 2025, some of the important sub-topics from KCET Dual Nature of Matter and Radiation topics are the Photoelectric Effect, Wave-Particle Duality, Heisenberg’s Uncertainty Principle and  Applications of the Dual Nature of Matter. In this article, we have discussed the KCET 2025 Dual Nature of Matter and Radiation Weightage along with the important topics and some sample questions related to the topic.

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Expected KCET Dual Nature of Matter and Radiation Weightage 2025

In the KCET 2025 Physics section, the portion of Dual Nature of Matter and Radiation generally makes up a small but significant portion of the KCET 2025 exam. Based upon the KCET previous years' question patterns, the total number of questions from these topics generally falls within the following range:

• Dual Nature of Matter and Radiation Weightage: 1–2% of the KCET 2025 Physics Syllabus
• The approximate number of questions asked from the Dual Nature of Matter and Radiation section is 1 to 3.
• These topics usually cover conceptual questions, theory-based questions, along numerical problems.

KCET 2025 Dual Nature of Matter and Radiation Important Topics

Some of the important chapters of KCET 2025 Dual Nature of Matter and Radiation have been listed below.

KCET Dual Nature of Matter and Radiation Sample Questions

Some of the practice questions of KCET Dual Nature of Matter and Radiation have been provided below.

• Find the de Broglie wavelength of an electron moving with a velocity of 5×106 m/s5 \times 10^6 \, \text{m/s}5×106m/s.
• Explain the photoelectric effect and how it supports the particle nature of light.
• Calculate the kinetic energy of photoelectrons ejected when light of wavelength 400 nm falls on a metal surface with a work function of 2.2 eV.
• State and explain de Broglie’s hypothesis. What is its significance?
• Explain how the concept of wave-particle duality is applied in electron microscopes.
• What is the de Broglie wavelength of a particle of mass mmm and velocity vvv?
  A) hmv\frac{h}{mv}mvh​
  B) mvh\frac{mv}{h}hmv​
  C) hm\frac{h}{m}mh​
  D) hv\frac{h}{v}vh​
• Describe the Davisson-Germer experiment and how it confirmed the wave nature of electrons.
• Which of the following factors does not affect the photoelectric current?
• A) Frequency of incident light
• B) Intensity of incident light
• C) Work function of the material
• D) Stopping potential

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