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important questions for class 12 physics with answers

important exam question for physics grade 12

Unit 1:     waves and optics Short Question answer Q.1  Differentiate between free and damped oscillation. Ans: The differences between free and damped oscillation are given below. Free oscillation Damped   oscillation 1.       The oscillation in the absence of external forces is called free oscillation 2.       The oscillation in which there is gradual decrement of amplitude due … Read moreimportant questions for class 12 physics with answers

Vernier Calliper Viva Questions Physics Exam Grade XI

Physics Grade XI viva Question Vernier calliper 1: What is vernier calipers? Ans. It is simple instrument by which length of an object can be measured accurately up to one-tenth of a millimeter or one-hundredth of a centimeter. 2: What is the use of Vernier Scale? Ans. To increase the accuracy of the main scale. … Read moreVernier Calliper Viva Questions Physics Exam Grade XI

Laser and its characteristics for Grade XII:-

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Laser = Acronym for Light Amplification By Stimulated Emission of Radiation   Characteristics of laser 1. It is monochromatic ie. having single color. 2. It is collimated i:e Unidirectional. 3. It is coherent i:e same phase. 4. … Read moreLaser and its characteristics for Grade XII:-

Measurement and Dimensions – Physics First chapter

physics bsc 1st year exam paper

Unit one (1) 1.1 Measurement and Dimensions 1 : physical Quantity :- Those physical Quantity which was some existence and measurable are known as physical quantity. Eg distanc, time , weight , velocity ,work etc Types of physical Quantity:- i> Fundamental Quantities : Those physical quantities which give own meaning it self and depend upon … Read moreMeasurement and Dimensions – Physics First chapter

Physics Exam Question paper 2072 Grade 11( HSEB Exam paper)

Important Physics Exam Question paper 2072 (2015) HSEB exam paper This Question paper is Directly scanned and uploaded no any edited is done with these paper Answer in brief, any six questions   Check dimensionally the correctness of the stroke’s formula, F=6 A woman in an elevator lets go of her briefcase but it does … Read morePhysics Exam Question paper 2072 Grade 11( HSEB Exam paper)

Vernier Calipers | Physics XI

Verniers Calipers | Physics Practical XI NAME OF EXPERIMENT : TO USE A VERNIER CALIPERS TO DETERMINE THE VOLUME OF THE GIVEN TUBE. APPARATUS REQUIRED : (i) Vernier calipers  (ii) Given Tube THEORY :  The vernier calipers is a device used for measuring lengths in fractions of a millimeter with greater accuracy as compared to that of ordinary … Read moreVernier Calipers | Physics XI

Electrochemical Equivalent (z), Chemical Equivalent (E), their Relations and Faraday’s Constant | Physics Grade 12

Electrochemical Equivalent (z) According to Faraday’s first law of electrolysis, m = z q or, z = m / q, where q = 1C, then z = m Hence, the electrochemical equivalent is the mass of ions deposited or liberated on an electrode during the electrolysis, where 1C of charge is passed through it. Chemical … Read moreElectrochemical Equivalent (z), Chemical Equivalent (E), their Relations and Faraday’s Constant | Physics Grade 12

Experimental Verification of Faraday’s Laws of Electrolysis | Grade 12 Physics

Read Part 1 | Chemical Effect of Current and Faraday’s Laws of Electrolysis: https://meropaper.com/?p=1682 Experimental Verification Faraday’s First Law To verify the Faraday’s first law of electrolysis, experimental arrangement is shown in figure. To verify the current, the different magnitude of current is passed through the copper sulphate solution with the help of Rheostat in equal … Read moreExperimental Verification of Faraday’s Laws of Electrolysis | Grade 12 Physics

Chemical Effect of Current & Faraday’s Laws of Electrolysis | Grade 12 | Physics

When a current is passed through the aqueous solution of a substance, the substance undergoes the chemical change. This effect of current is known as chemical effect of current or electrolysis. Faraday’s Laws of Electrolysis Faraday’s First Law The mass of ions deposited or liberated on an electrode is directly proportional to the amount of … Read moreChemical Effect of Current & Faraday’s Laws of Electrolysis | Grade 12 | Physics