Wave travelling from one medium to another

Iqbal Lucky asked “when a wave enters from air to water, its wavelength changes but frequency remains unchanged. why” Answer Velocity of a wave = frequency x time period V = ν λ When a wave travels from one medium to another, its velocity changes and so also is its wavelength, but frequency; which is…… Continue reading Wave travelling from one medium to another

Limitations of Dimensional Analysis

Ashmeeta Bhattarai asked: “What are limitations of principle of homogeneity of dimensional analysis?” The dimensional analysis has the following limitations It fails while using it to derive a relation among physical quantities, if there are more than 3 unknown variables on which a given physical quantity depends It does not tell whether a given Physical…… Continue reading Limitations of Dimensional Analysis

Question waiting to be answered.

The following questions are waiting to get an answer. You can also try answering them through the comment system what happens when a unchargedbody comes i contact with a charged body? Twelve wires, each of resistance r,are connected to form a skeleton cube. Find the equivalent resistance between the two diagonally opposite corners of the…… Continue reading Question waiting to be answered.


PHYSICS TIME 3 HRS                                    MAX MARKS: 70 GENERAL INSTRUCTIONS: All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry one 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. There is no…… Continue reading MODEL QUESTION PAPER FOR AISSCE 2008