CBSE published sample question papers for all subject for the year 2012. You can download the CBSE Sample paper in Physics and the marking scheme for class Xii 2016 here.
Why Practice CBSE Sample Papers and Marking Scheme?
Practising the sample question paper and the Marking Scheme will give you an idea of the type of questions in the Board Examination 2016. It also gives an insight into “How the value points are allotted marks?” . This helps you to plan well for the exam and get maximum marks by limiting the extend of the answer and get maximum marks and save time.
The Sample Question Papers submitted by CBSE officially is considered very important. CBSE use to publish a set of sample papers every year which essentially reminds every student the level of preparation expected from each. It was a common practice in every school to grab copies of the sample papers published by CBSE and every teacher used to make sure that all the students compulsorily solve all the questions of the CBSE Sample Papers. Without the CBSE sample papers and previous question papers, many students simply learn by rot a few questions and answers exhibiting a dismal performance in the Board Exam. We don’t you to be a poor performer. Keep it a point that you practise all the questions from the CBSE sample paper.
So, what to do to Download CBSE Sample Paper!
Just download and practice the sample question paper from the link below and make sure to consult whether your answers conform to the answers expected.
Do not forget to download the previous question papers too from www.askphysics.com where the previous question papers from 2008 onwards are published. Marking schemes are available along with most of them.
Have a doubt! Don’t worry! Ask your doubts here in this site or at www.askphysics.com and we will come up with an answer.
Practising old question paper is good for preparing for the exam. One should be familiar with the pattern and the tpe of questions asked in the board examinations. Download here a solved question paper based on the 2007 CBSE Board examination.
The Summative Assessment 1 is about to begin. As per request from student from various parts of India and abroad, we are publishing some solved sample papers in Physics, which we think, would help you in scoring better marks in the forthcoming SA1 exams.
The drift velocity is of the order of a few cm/s. But when we switch on a bulb, it glows instantly. How is this possible?
Define internal resistance.
If n identical resistors are connected in series first and then in parallel, Calculate the ratio of effective resistance in series to the effective resistance in parallel.
State Ohm’s law.
State the principle of a potentiometer.
Write the colour coding of a carbon resistor of resistance 18000 Ω and a tolerance 10%
What is a thermistor?
2 Marks Questions
Deduce Ohm’s law using the concept of drift velocity.
State Kirchhoff’s laws for electric networks.
Distinguish emf and terminal voltage.
Derive an expression for drift velocity.
3 marks questions
A battery om emf E and internal resistance r gives a current 0.5 A with an external resistance of 12 Ω and a current 0.25 A with an external resistance of 25Ω. Calculate the internal resistance and emf of the cell.
An electric motor operating on a 50 V dc supply draws a current of 12A. If the efficiency of the motor is 30%, estimate the resistance of the windings of the motor.
Draw the diagram showing the experimental arrangement for determining the resistance of a given wire of unknown resistance.
5 Marks Questions
(a)Explain how a potentiometer is used to determine the internal resistance of a primary cell.
(b)State the factors affecting the internal resistance of a cell
Draw the equipotential surface for a point charge q>0.
Define dielectric constant of a medium on the basis of capacitance.
Write the ratio of electric potential at a distance r on equatorial position to the electric potential at a distance r on axial position.
Calculate the radius of a spherical conductor of capacitance 1 pF.
What is electrostatic shielding?2 Marks Questions
A regular hexagon of side 10 cm has a charge 5 μC at each of its vertices. Calculate the potential at the centre of the hexagon.
Derive an expression for the energy stored in a capacitor.
Four capacitors are connected as shown in diagram. Calculate the equivalent capacitance between the points X and Y.
When two capacitors of capacitance C1 and C2 are connected in series, the net capacitance is 3μF . When connected in parallel the effective capacitance is 16μF. Calculate the values of C1 and C23 marks questions
Derive an expression for the capacitance of a parallel plate capacitor with a dielectric slab of thickness less than the spacing between the the plates inserted between the plates.
A 10μF capacitor is charged by a 30V dc supply and then connected across a an uncharged 50μF capacitor. Calculate (i) the final potential difference across the combination, and (ii) the initial and final energies. How will you account for the difference in energy?
A parallel plate capacitor with air between the plates has a capacitance of 8 pF. What will be the capacitance if the distance between the plates is reduced by half and the space betwee them is filled with a substance of dielectric constant K = 6?5 Marks Questions
Describe the principle construction and working of a Van de Graff generator. Explain why the apparatus is enclosed inside a steel chamber maintained at high pressure.