Category: CLASS XI

CLASS 11 PHYSICS – PRACTICE PAPER FOR ANNUAL EXAM

SESSION ENDING EXAMINATION CLASS XI PHYSICS M.MARKS:70 TIME 3 HRS General Instructions: All questions are compulsary There are 30 questions in total. Questions 1 to 8 carry 1 mark each. Questions 9 to 18 carry 2 marks each. Questions 19 to 27 carry 3 marks each and questions 28 to 30 carry 5 marks each.…… Continue reading CLASS 11 PHYSICS – PRACTICE PAPER FOR ANNUAL EXAM

Motion in a vertical circle and conservation of energy

A stone  tied to a string of length l is whirled around a vertical circle with the other end of the string at the centre. At a certain instant of time the stone is at the lowest position and has a speed u. What is the magnitude of change in its velocity as it reaches…… Continue reading Motion in a vertical circle and conservation of energy

Questions waiting to be answered at www.askphysics.com

Can you answer these? A bullet of mass m is fired with a velocity v and strikes a a block of mass M suspended by a string of length L. the bullet gets embedded in the block. What is the angle the the block makes due to the impact?   Why planets revolve around their…… Continue reading Questions waiting to be answered at www.askphysics.com

Addition of vectors – can you add 3 unit vectors to get a unit vector ?

“Can you add 3 unit vectors to get a unit vector ? discuss in terms of velocity, force etc” -Sindhuja posted The answer is yes. Please find a detailed description on addition of vectors with examples and exercises at the following links. http://www.physchem.co.za/Vectors/Addition.htm http://www.physchem.co.za/Vectors/Physical%20Examples.htm http://www.physicsclassroom.com/class/vectors/u3l1b.cfm http://www.walter-fendt.de/ph14e/resultant.htm http://canu.ucalgary.ca/map/content/vectors/addition/explain/tiptail/ http://www.physicsclassroom.com/morehelp/vectaddn/practice.cfm

Class XI Physics Chapter wise Revision Test – Gravitation and Waves

PHYSICS TESTPAPER CLASS XI GRAVITATION AND WAVES   Instructions Questions 1 to 5 carries one mark each Questions 5 to 10 carries 2 marks each Questions 10 to 15 carries 3 marks each Questions 16 and 17 carries 5 marks each   What are mechanical waves? The time period of a vibrating source producing sound…… Continue reading Class XI Physics Chapter wise Revision Test – Gravitation and Waves