Lec 3 | कुलाम का नियम | Chap 1 | विद्युत आवेश और क्षेत्र | 12th Physics | By Gopal Sir | Doubtnut

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

The radius and the height of a right circular cone are in the ratio 5:12. Its curved surface area is 816.4 cm^2 . What is the volume (in cm^3 ) of the cone? (Take pi = 3.14 ) एक लंबवृत्तीय शंकु की त्रिज्या और ऊंचाई का अनुपात 5 : 12 है। इसका वक्रपृश्ठ क्षेत्र 816.4 वर्ग समी है। शंकु का आयतन ( सेमी^3 में) कितना है? ( pi = 3.14 माने)

Questions Practice Part3 | सतत आवेश वितरण | विद्युत फ्लक्स | गॉस का नियम एवं उनके अनुप्रयोग

The ratio (by volume) of milk and water in a mixture is 2:1. If we add 12 litres of water in the mixture, then the ratio of milk and water becomes 4:3. What is the quantity of water in the new mixture? एक मिश्रण में दूध और पानी का अनुपात (मात्रा में ) 2 : 1 है | यदि हम मिश्रण में 12 लीटर पानी मिला दें, तो दूध और पानी का अनुपात 4 : 3 हो जाता है | नए मिश्रण में पानी की मात्रा कितनी है?

A is the smallest three-digit number which when divided by 3,4 and 5 gives remainder 1,2 and 3 respectively. What is the sum of the digits of A ? A वह तीन अंको की सबसे छोटी संख्या है, जो 3, 4 और 5 से विभाजित करने पर क्रमसः 1, 2 तथा 3 शेषफल देती है | A के अंको का योग कितना है?

From the top of a 12 m high building, the angle of elevation of the top of the tower is 60^@ and the angle of depression of the foot of the tower is theta , such that tan theta=3/4 . What is the height of tower 12 मी ऊँचे भवन के शीर्ष से टावर के शीर्ष का उन्नयन कोण 60^@ है और टावर के तल का अवनमन कोण theta इस प्रकार है कि tan theta=3/4 है | इस टावर की ऊंचाई क्या है ? ( sqrt3=1.73 )

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 ?