CBSE Class 12 Physics Boards 2021 Sample Paper Solved

Read and download PDF of CBSE Class 12 Physics Boards 2021 Sample Paper Solved designed as per the latest curriculum and examination pattern for Class 12 issued by CBSE, NCERT and KVS. The latest Class 12 Physics Sample Papers have been provided with solutions so that the students can solve these practice papers and then compare their answers. This will help them to identify mistakes and improvement areas in Physics Class 12 which they need to study more to get better marks in Class 12 exams. After solving these guess papers also refer to solved Class 12 Physics Question Papers available on our website to build strong understanding of the subject

Sample Paper for Class 12 Physics Pdf

Students can refer to the below Class 12 Physics Sample Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Physics Boards 2021 Sample Paper Solved

Physics Class 12 Sample Paper

Section – A
All questions are compulsory. In case of internal choices, attempt any one of them.
 
1 Name the physical quantity having unit J/T.
 
2 Mention one use of part of electromagnetic spectrum to which a wavelength of 21 cm (emitted by hydrogen in interstellar space) belongs.
OR
Give the ratio of velocity of the two light waves of wavelengths 4000Å and 8000Å travelling in vacuum.
 
3 An electron with charge -e and mass m travels at a speed v in a plane perpendicular to a magnetic field of magnitude B. The electron follows a circular path of radius R. In a time, t, the electron travels halfway around the circle. What is the amount of work done by the magnetic field?
4 A solenoid with N loops of wire tightly wrapped around an iron-core is carrying an electric current I. If the current through this solenoid is reduced to half, then what change would you expect in inductance L of the solenoid.
OR
An alternating current from a source is given by i=10sin314t. What is the effective value of current and frequency of source?
 
5 What is the value of angular momentum of electron in the second orbit of Bohr’s model of hydrogen atom?
 
6 In a photoelectric experiment, the potential required to stop the ejection of electrons from cathode is 4V. What is the value of maximum kinetic energy of emitted Photoelectrons?
 
7 In decay of free neutron, name the elementary particle emitted along with proton and electron in nuclear reaction.
OR
In the following nuclear reaction, Identify unknown labelled X.
 
8 How does the width of a depletion region of a pn junction vary if doping concentration is increased?
OR
In half wave rectification, what is the output frequency if input frequency is 25 Hz.
 
9 When a voltage drop across a pn junction diode is increased from 0.70 V to 0.71V, the change in the diode current is 10 mA .What is the dynamic resistance of diode?
 
10 Which specially fabricated pn junction diode is used for detecting light intensity?
 
For question numbers 11, 12, 13 and 14, two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
 
a) Both A and R are true and R is the correct explanation of A
 
b) Both A and R are true but R is NOT the correct explanation of A
 
c) A is true but R is false
 
d) A is false and R is also false
 
11 Assertion(A) :
In a nonuniform electric field, a dipole will have translatory as well as rotatory motion.
 
Reason(R):
In a nonuniform electric field, a dipole experiences a force as well as torque.
 
12 Assertion(A):
Electric field is always normal to equipotential surfaces and along the direction of decreasing order of potential
 
Reason(R):
Negative gradient of electric potential is electric field.
 
13 Assertion (A):
A convex mirror cannot form real images.
 
Reason (R):
Convex mirror converges the parallel rays that are incident on it.
 
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CBSE Class 12 Physics Boards 2021 Sample Paper Solved

We hope you liked the above provided CBSE Class 12 Physics Boards 2021 Sample Paper Solved. To get an understanding of the type of questions which were asked in exams, it is important for Class 12 students to understand the way sample Paper are set by teachers. Students can download the Sample Paper for Class 12 Physics which will be coming in the exams so that you can practise them and solve all types of questions that can be asked in exams. By doing CBSE Class 12 Physics Boards 2021 Sample Paper Solved you will understand the regular questions and MCQ questions for Class 12 Physics which are always asked. You can download CBSE Class 12 Physics Sample Paper and Class 12 Physics Question 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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