CLASS XII – PHYSICS Sample Paper II

CLASS XII – PHYSICS Sample Paper Time allowed : 3 hours Max. Marks : 70 General Instructions: All questions are compulsory There are 30 questions in total. Questions 1 to 8 carry one mark each, 9 to 18 carry two marks each, 19 to 27 carry 3 marks each and 28 to 30 carry 5 … Continue reading CLASS XII – PHYSICS Sample Paper II

Electricfield, Magnetic Field and Photon

We know that photon has no charge. Then where from it gets electric and magnetic field in light? Malik Sajad asks Answer: Electric and magnetic fields are not produced by the photon; it is massless too. But, photon is created by time varying electric a...

Solution to HC Verma Problem

“Referring to HC Verma Part 2, chapter 29, Electric field and potential, Q 69 I think that Force is inversely proportional to square of the distance between the charged particles, so acceleration is not constant and hence v*v  =  u*u  + 2*a*s   is not valid in this case. [...]

How atoms are formed? – Neeraj Asks

Neeraj asks: ”We have read that atoms can neither been created nor been destroyed!I want to know from where atoms came in existence,if they can not been created,also atom contain electron and proton which are negatively and positively charged,i want to know from where these charge came?”   Your question will be answered soon Link to this post!

How atoms are formed? – Neeraj Asks

Neeraj asks: ”We have read that atoms can neither been created nor been destroyed!I want to know from where atoms came in existence,if they can not been created,also atom contain electron and proton which are negatively and positively charged,i want to know from where these charge came?”   Your question will be answered soon Link to this post!

Electrostatic induction – Where does the charge go on earthing?

Rajkumar asks:”in electrostatic induction in step 3 when earthed wire is removed then where the free negative charge go.does they go to earth then what happen to them.” Waiting for responses from visitors Incoming search terms:earthing whic...

Differences between mass and charge

Charge is of two types, mass is only of one kind There are two types of forces (attraction and repulsion) between charges, but there is only one kind (attraction) between masses Charge is quantized, but quantization of mass is not established so far Charge has SI unit coulomb, the SI unit of mass is kg … Continue reading Differences between mass and charge