Cbse 2017 physics paper pdf download

The paper consists of theoretical problems, practical questions and application-based questions to test your overall knowledge of the subject. Download the physics question paper solved pdf for free to refer to in case of any doubts regarding the CBSE physics question paper. Physics is a concept-based subject governed by principles and terms. Students need to be quick at adapting to the exam pattern as it will include different types of problems.

Practising CBSE class 12 physics question paper will allow you the necessary information regarding the exam pattern. Practice finishing the question paper under the stipulated time. Physics board paper solutions pdf is free for downloads. These are accurate and reliable as subject experts prepare these. With a better understanding of the concepts and the type of questions asked in the examination, students will comfortably sail through the Physics paper. CBSE class 12 physics question paper is for a total of 70 marks.

Get complete Class 12 study material. How to Calculate 12th Percentage. Class 12 Math Important Questions. Sign in. Forgot your password? Get help. Password recovery. Class Share on Facebook. Question: What is the relation between electric current I and drift velocity v d of electrons? Let n be the number density of free electrons in a conductor of length l and area of cross-section.

Question: In a CE transistor amplifier, there is a current and voltage gain associated with the circuit. In other words there is a power gain. Considering power a measure of energy, does the circuit violate conservation of energy? In case of CE transistor amplifier, the power gain is very high. In this type of circuit, the extra power required for amplified output is obtained from DC source.

Thus, the circuit used does not violet the law of conservation. What is the angle of refraction, if the unpolarized light is incident on it at the polarizing angle of the medium? Question: What is attenuation? Name three different types of modulations used for a message signal using a sinusoidal continuous carrier wave. It is the loss of strength of a signal while propagating through a medium. Question: Two polaroids are oriented in such way that the intensity of the light transmitted by them is maximum.

To what percentage of its maximum value is the intensity of transmitted light reduced when one of the polaroids is rotated through i 30 o ii 60 o. The two polaroids are parallel to each other initially.

Explain briefly the reasons why wave theory of light is not able to explain the observed features in photoelectric effect.