L05 | चुम्बकीय क्षेत्र की तीव्रता | 12th Physics | Chapter 5 | By Gopal Sir | Doubtnut

Class 12th Physics | Easy & Hard Most Important Chapters

स्थाई चुंबक (चुंबकीय द्विध्रुव तथा द्विध्रुव आघूर्ण) तथा विद्युत चुंबक |परिभ्रमण करते इलेक्ट्रॉन का चुंबकीय द्विध्रुव आघूर्ण |चुंबकीय द्विध्रुव (छड़ चुंबक) के कारण चुंबकीय क्षेत्र की तीव्रता |एकसमान चुंबकीय क्षेत्र मे चुंबकीय द्विध्रुव (छड़ चुंबक) पर बल आघूर्ण |पृथ्वी का चुम्बकीय क्षेत्र और चुंबकीय अवयव |दोलन चुम्बकत्वमापी |Summary

Class 12 Physics | Chapter 5 Magnetism and Matter | Important Questions & Quick Revision | Part 1

Class 12 Physics | Chapter 5 Magnetism and Matter | Important Questions & Quick Revision | Part 2

Class 12 Physics (Hindi)| Chapter 1 वैद्युत आवेश तथा क्षेत्र | Important Questions | UP Boards

An examination was held during the 2 weeks of April 3rd-Sunday to 16th Saturday. There was 1 paper for the six subjects - Physics, Chemistry, Biology, Maths, English and Hindi. Only 1 paper per day No exam on Saturdays and Sundays and Holiday on April 5th. Only 3 exams were there in a week. Chemistry was before Biology and Maths was on the next day of Hindi. The day on which the paper of biology and maths were held was the same, while that for chemistry and physics was also the same. There was no exam for 3 days between Physics and the exam prior to it. Hindi exam on Tuesday and one exam between Hindi and English exam. There was at least a gap of one day between any 2 science paper. Which of the following exam was held on April 12th ?

This question is based on the following alphabet series. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z If the first 6 letters are written in reversed order, then the next 5 letters are written in reversed order and again next 6 letters are written in reversed order then which letter is in the middle between 7th letter from the left and 12th letter from the right? 1) G 2) T 3) H 4) U 5) None of these

There is a concept that if unit of a physical quantity is large then the multiplier of the unit becomes less while expressing any fixed magnitude. If in a new system of unit, unit of time is 0.5 second and the unit of length is 4 metre. Answer the following questions. If unit of time is doubled, the unit of length is halved and unit of mass is increased by a factor n such that a particular force retains its value in both th system of units then the value of n is :

In a biprism experiment , the distance between the coherent source is 0.5 mm and that between the slit and the eyepiece is 1.2 m, the slit is illuminated by red light of wavelength 6500 Å . If the red light is repluced by a green light of movelength 6550 Å , it is found that the nth red band coincides with (n+1)th green bright band. Calculate the distance of these from the central bright band.