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Chapters
2: Electrostatic Potential and Capacitance
3: Current Electricity
4: Moving Charges and Magnetism
5: Magnetism and Matter
6: Electromagnetic Induction
7: Alternating Current
8: Electromagnetic Waves
9: Ray Optics and Optical Instruments
10: Wave Optics
▶ 11: Dual Nature of Radiation and Matter
12: Atoms
Chapter 13: Nuclei
Chapter 14: Semiconductor Electronics: Materials, Devices and Simple Circuits
![NCERT solutions for Physics [English] Class 12 chapter 11 - Dual Nature of Radiation and Matter - Shaalaa.com](/images/physics-english-class-12_6:ecf5a31cda3a46679a04fc327e398323.jpg "NCERT solutions for Physics [English] Class 12 chapter 11 - Dual Nature of Radiation and Matter")
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Solutions for Chapter 11: Dual Nature of Radiation and Matter
Below listed, you can find solutions for Chapter 11 of CBSE, Karnataka Board PUC NCERT for Physics [English] Class 12.
NCERT solutions for Physics [English] Class 12 11 Dual Nature of Radiation and Matter EXERCISES [Pages 288 - 289]
Find the (a) maximum frequency and (b) minimum wavelength of X-rays produced by 30 kV electrons.
The work function of caesium metal is 2.14 eV. When light of frequency 6 × 1014 Hz is incident on the metal surface, photoemission of electrons occurs. What is the
- maximum kinetic energy of the emitted electrons,
- Stopping potential, and
- maximum speed of the emitted photoelectrons?
The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?
Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW.
- Find the energy and momentum of each photon in the light beam.
- How many photons per second, on average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area.)
- How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?
In an experiment on the photoelectric effect, the slope of the cut-off voltage versus the frequency of incident light is found to be 4.12 × 10−15 Vs. Calculate the value of Planck’s constant.
The threshold frequency for a certain metal is 3.3 × 1014 Hz. If light of frequency 8.2 × 1014 Hz is incident on the metal, predict the cut-off voltage for the photoelectric emission.
The work function for a certain metal is 4.2 eV. Will this metal give photoelectric emission for incident radiation of wavelength 330 nm?
Light of frequency 7.21 × 1014 Hz is incident on a metal surface. Electrons with a maximum speed of 6.0 × 105 m/s are ejected from the surface. What is the threshold frequency for photoemission of electrons?
Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made.
What is the de Broglie wavelength of a bullet of mass 0.040 kg travelling at the speed of 1.0 km/s?
What is the de Broglie wavelength of a ball of mass 0.060 kg moving at a speed of 1.0 m/s?
What is the de Broglie wavelength of a dust particle of mass 1.0 × 10−9 kg drifting with a speed of 2.2 m/s?
Show that the wavelength of electromagnetic radiation is equal to the de Broglie wavelength of its quantum (photon).
Solutions for 11: Dual Nature of Radiation and Matter
NCERT solutions for Physics [English] Class 12 chapter 11 - Dual Nature of Radiation and Matter
Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Physics [English] Class 12 CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Physics [English] Class 12 CBSE, Karnataka Board PUC 11 (Dual Nature of Radiation and Matter) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Physics [English] Class 12 chapter 11 Dual Nature of Radiation and Matter are Photoelectric Effect and Wave Theory of Light, Einstein’s Photoelectric Equation: Energy Quantum of Radiation, Particle Nature of Light: The Photon, Dual Nature of Radiation, Electron Emission, Photoelectric Effect - Hertz’s Observations, Photoelectric Effect - Hallwachs’ and Lenard’s Observations, Experimental Study of Photoelectric Effect, Einstein’s Equation - Particle Nature of Light, Davisson and Germer Experiment, de-Broglie Relation, Wave Nature of Matter, Overview: Dual Nature of Radiation and Matter, Photoelectric Effect and Wave Theory of Light, Einstein’s Photoelectric Equation: Energy Quantum of Radiation, Particle Nature of Light: The Photon, Dual Nature of Radiation, Electron Emission, Photoelectric Effect - Hertz’s Observations, Photoelectric Effect - Hallwachs’ and Lenard’s Observations, Experimental Study of Photoelectric Effect, Einstein’s Equation - Particle Nature of Light, Davisson and Germer Experiment, de-Broglie Relation, Wave Nature of Matter, Overview: Dual Nature of Radiation and Matter.
Using NCERT Physics [English] Class 12 solutions Dual Nature of Radiation and Matter exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Physics [English] Class 12 students prefer NCERT Textbook Solutions to score more in exams.
Get the free view of Chapter 11, Dual Nature of Radiation and Matter Physics [English] Class 12 additional questions for Mathematics Physics [English] Class 12 CBSE, Karnataka Board PUC, and you can use Shaalaa.com to keep it handy for your exam preparation.
