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SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 chapter 14 - Dual Nature Of Radiation And Matter [Latest edition]

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12th Standard HSC Physics Maharashtra State Board 2021 - Shaalaa.com

Chapter 14: Dual Nature Of Radiation And Matter

MCQ’SVery Short AnswerShort Answer IShort Answer IILong Answer
MCQ’S

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 14 Dual Nature Of Radiation And Matter MCQ’S

1 Mark Each

MCQ’S | Q 1

The electrons are emitted in the photoelectric effect from a metal surface.

  • only if the frequency of radiation is above a certain threshold value.

  • only if the temperature of the surface is high.

  • at the that is independent of the nature of metal.

  • with a maximum velocity proportional to the frequency of incident radiation

MCQ’S | Q 2

As the intensity of incident light increases ______ 

  • photoelectric current increases

  • photoelectric current decreases.

  • the kinetic energy of emitted photoelectrons increases

  • the kinetic energy of emitted photoelectrons decreases.

MCQ’S | Q 3

The maximum kinetic energy of the photoelectrons depends only on ______ 

  • potential

  • frequency

  • incident angle

  • pressure

MCQ’S | Q 4

According to De-Broglie, the waves are associated with ______ 

  • moving neutral particles only.

  • moving charged particle only.

  • electrons only

  • all moving matter particles

MCQ’S | Q 5

The work function of a metal is 4.2 Ev. Its threshold wavelength will be ______ 

  • 4000 Å

  • 3500 Å

  • 2959 Å

  • 2500 Å

MCQ’S | Q 6

Ultraviolet radiation of 6.2 eV falls on an aluminum surface (work function 4.2 eV). The kinetic energy in joules of the fastest electron emitted is ______ 

  • 3.2 × 10-21

  • 3.2 × 10-19

  • 3.2 × 10-1

  • 3.2 × 10-15 

MCQ’S | Q 7

Planck's constant is 6.6 × 10-34 Js. The momentum of each photon is given radiation Is 3.3 × 10-2 kg/s. The λ of radiation is ______ 

  • 2 × 1010

  • 2 × 107

  • 2 × 105

  • 2 × 10-5

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Very Short Answer

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 14 Dual Nature Of Radiation And Matter Very Short Answer

1 Mark Each

Very Short Answer | Q 1

Define photoelectric effect. 

Very Short Answer | Q 2

Define threshold frequency.

Very Short Answer | Q 3

What is cut-off or stopping potential?  

Very Short Answer | Q 4

Define the work function of the metal. 

Very Short Answer | Q 5

The minimum frequency for photoelectric effect on metal is 7 × 1014 Hz, Find the work function of the metal. 

Very Short Answer | Q 6

Find the kinetic energy of the emitted electron, if in photoelectric effect energy of incident Photon is 4 eV and work function is 2.4 eV. 

Very Short Answer | Q 7

Find the energy of photon which have momentum 2 × 10-16 gm-cm/sec.  

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Short Answer I

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 14 Dual Nature Of Radiation And Matter Short Answer I

2 Marks Each

Short Answer I | Q 1

Explain the term ‘wave-particle duality' of matter.  

Short Answer I | Q 2

Draw a neat labelled diagram of a schematic of the experimental setup for the photoelectric effect. 

Short Answer I | Q 3

What is mean by the dual nature of matter? 

Short Answer I | Q 4

Explain the concept of the photoelectric effect. 

Short Answer I | Q 5

If the total energy of radiation of frequency 1014 Hz is 6.63 J, Calculate the number of photons in the radiation. 

Short Answer I | Q 6

An electron is accelerated through a potential of 120 V. Find its de Broglie wavelength.

Short Answer I | Q 7

Calculate the stopping potential when the metal with the work function 0.6 eV is illuminated with the light of 2 eV.

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Short Answer II

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 14 Dual Nature Of Radiation And Matter Short Answer II

3 Marks Each

Short Answer II | Q 1

State Einstein photoelectric equation. Explain 2 characteristics of the photoelectric effect on the basis of Einstein’s photoelectric equation. 

Short Answer II | Q 2

With the help of a circuit diagram describing an experiment to study the photoelectric effect.  

Short Answer II | Q 3

What is the photoelectric effect? Define stopping potential and photoelectric work function. 

Short Answer II | Q 4

Calculate De Broglie's wavelength of the bullet moving with speed 90m/sec and having a mass of 5 gm. 

Short Answer II | Q 5

The energy of a photon is 2 eV. Find its frequency and wavelength.  

Short Answer II | Q 6

The work function of a surface is 3.1 eV. A photon of frequency 1 × 1015 Hz. Is an incident on it. Calculate the incident wavelength is photoelectric emission occurs or not.   

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Long Answer

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 Chapter 14 Dual Nature Of Radiation And Matter Long Answer

4 Marks Each

Long Answer | Q 1

With the help of a circuit diagram describe the experiment to study the characteristics of the photoelectric effect. Hence discuss any 2 characteristics of the photoelectric effect.  

Long Answer | Q 2

State Einstein’s photoelectric equation. Explain all characteristics of the photoelectric effect, on the basis of Einstein’s photoelectric equation.  

Long Answer | Q 3

Explain De Broglie’s Hypothesis.

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Chapter 14: Dual Nature Of Radiation And Matter

MCQ’SVery Short AnswerShort Answer IShort Answer IILong Answer
12th Standard HSC Physics Maharashtra State Board 2021 - Shaalaa.com

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 chapter 14 - Dual Nature Of Radiation And Matter

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Physics Maharashtra State Board 2021 chapter 14 (Dual Nature Of Radiation And Matter) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board 12th Standard HSC Physics Maharashtra State Board 2021 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in 12th Standard HSC Physics Maharashtra State Board 2021 chapter 14 Dual Nature Of Radiation And Matter are Dual Nature of Radiation and Matter, The Photoelectric Effect, Wave-particle Duality of Electromagnetic Radiation, Photo Cell, De Broglie Hypothesis, Davisson and Germer Experiment, Wave-particle Duality of Matter.

Using SCERT Maharashtra Question Bank 12th Board Exam solutions Dual Nature Of Radiation And Matter exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in SCERT Maharashtra Question Bank Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer SCERT Maharashtra Question Bank Textbook Solutions to score more in exam.

Get the free view of chapter 14 Dual Nature Of Radiation And Matter 12th Board Exam extra questions for 12th Standard HSC Physics Maharashtra State Board 2021 and can use Shaalaa.com to keep it handy for your exam preparation

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