How can we define one Newton ?

How can we define one Newton? (Asked Pawas Rituja) One newton is defined as that force which when acts on a body of mass 1 kg produces an acceleration of 1 m/s^2 in it Incoming search terms:if you set up your pendulum atop mount everest would the period be less than the same as or greater thanit would [...]

Pseudo force and solving problems

Sir,can we solve problem without considering pseudo forces in non inertial frame?(give an example) Incoming search terms:QUESTINS FOR PROPERTIES OF MATTERoverloading physicsa stary nightsample paper of 10 class sa 1resultant force due to magnetic effectscience sample paper for class 2011 sa1sample question for cbse class ix sa1star and nightmagnetic forces onlyfree download of cbse based social [...]

Stringtheory or M theory

Ruben Myrhagen asks”I’ve watched some documentaries about this theory.. from what i could understand ( wich may be little) those tiny strings determine the form of the atom ( i mean if its gas-water or anything) would it be possible to manipulate these vibrating strings to create whatever we want ? like water. gas or [...]

A Numerical from Combination of thin lenses in contact

Two thin lenses of focal lengths f1=20cm and f2=60cm are placed in contact. find the focal length f3 of the combined lenses. find also the focal length f of a third lens placed in contact with these two that would result in overall focal length f11=-40cm. (Asked Young) Incoming search terms:class 9 science sample paper for [...]


The following links to SCERT will help you get a handful of good sample papers for preparation for Plustwo Physics Exams including the Onam Examinations Class X Physics Sample Paper (SSLC) 2006 Sample Question Paper on Electronics   Higher Secondary Physics Question Paper  

Preparing for IIT JEE Physics

Yudhvir asks: “Hello Sir!!! I m in 11th!! I want to do less work & more benefit!! I don’t like to study at all!!…but i have decided to do only DC Pandey!! is it enough for IIT preparation???”   Answer: No pain, no gain! Whatever be the book you follow, understanding the basic concepts is all [...]

Can you find the impracticability of the following question?

The following question is from a recent question paper for class XI Physics where the teacher tried to restructure a question from NCERT Textbook in Physics for Class XI. This is an example where careless restructuring creates problematic situation. However, can you tell me what is the impracticability with  the following problem? Also tell me what assumptions [...]