CBSE Class 12 Applied Physics Boards 2020 Question Paper

Read and download CBSE Class 12 Applied Physics Boards 2020 Question Paper designed as per the latest question paper pattern and Class 12 examination guidelines issued by CBSE, NCERT and KVS. The past year Question Papers for Class 12 Physics have been provided with solutions which will help students to assess their performance and find out topics in Physics Class 12 which they need to improve to get better marks in Class 12 exams. After solving these last year papers also refer to solved Sample Papers for Class 12 Physics available on our website to build strong understanding of the subject

Physics Question Paper Class 12

Students can refer to the below Class 12 Physics Question Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Applied Physics Boards 2020 Question Paper

Physics Class 12 Question Paper

APPLIED PHYSICS
1. (a) Define electric field intensity. Give its SI unit. Write the formula for electric field intensity due to a point charge. Calculate the electric field intensity at a distance of           50 cm from a charge of 50 μC.
 
(b) What is a capacitor ? Derive a formula for the energy stored in a capacitor. 
OR
Draw a figure showing the combination of three capacitors in series. Write the formula for the net capacitance when three capacitors are connected in series. Three capacitors of 2 μF, 3 μF and 6 μF are connected in series. Find the net capacitance.
 
(c) Define Gauss theorem. Apply this theorem to find the electric field intensity inside a hollow charged conductor.
 
2. (a) Define magnetic field. Write the SI unit of magnetic field intensity.
          Write the formula for the magnetic field intensity due to a straight current-carrying conductor. What is the value of the magnetic field at the surface of the conductor ? 
 
    (b) What are the factors that affect the force on a charge moving in a magnetic field ? Write the formula for the force. State the cases when the charge will experience      (i) maximum, and (ii) minimum force. 
                                                                                        OR
         Define the terms Magnetic flux density and Permeability. Write their SI units. Write the name of a substance having large permeability.
 
(c) Derive an expression for the magnetic field intensity at the centre of a current-carrying circular coil.
 
3. (a) Define nuclear fission and nuclear fusion. Give three differences between them. 
 
   (b) What are radio-isotopes ? Write the name of two radio-iostopes and write one use of each.
                                                            OR
     What are radiation hazards ? Name two radiation hazards. How can we protect ourselves from radiation hazards ?
 
(c) Explain the principle, construction and working of a nuclear reactor.
 
4. (a) What are semiconductors ? Give the atomic structure of Ge and Si.
         How is the conductivity of semiconductors affected by rise in temperature ?
 
    (b) Draw the symbol of p-n junction. Draw a circuit diagram of p-n junction in forward biasing. Explain the working of a p-n junction in forward biasing.
                                        OR
        What is a rectifier ? Explain the working of a p-n junction as a full-wave rectifier.
 
   (c) Draw a symbol of an n-p-n transistor. Draw a circuit diagram of n-p-n transistor with proper biasing and explain transistor action.
Please click on below link to download CBSE Class 12 Applied Physics Boards 2020 Question Paper.

CBSE Class 12 Applied Physics Boards 2020 Question Paper

We hope you liked the above provided CBSE Class 12 Applied Physics Boards 2020 Question Paper. To get an understanding of the type of questions which were asked in previous year exams, it is important for Class 12 students to refer to CBSE Class 12 Applied Physics Boards 2020 Question Paper that we have provided above. Students can download all the Question Papers for Class 12 Physics which were issued in the exams so that you can practise them and solve all types of questions which have been asked till now. By doing all CBSE Class 12 Applied Physics Boards 2020 Question Paper PYP (previous year papers) you will understand the regular questions and MCQ questions for Class 12 Physics which are always asked and learn them so that you can get full marks in those questions. You can download CBSE Class 12 Physics Previous Year Question Papers and Class 12 Physics Sample Papers in PDF. You should attempt all the last year question paper for Class 12 and Class 12 Physics MCQ Test in examination conditions at home and then compare their answers with the solutions provided by our teachers.
 

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