Units and Measurements Class 11 Physics | NEET JEE CBSE | Questions

Free NCERT notes:http://bit.ly/Class11PhysicsUnitsDime... Free NCERT Solutions:http://bit.ly/Class11UnitsDimensionsS... Watch the entire playlist for Class 11:https://bit.ly/Class11PhysicsUnitsAnd... Join Telegram :http://bit.ly/TelegramGroupForClass11 Ask Doubts : https://www.examfear.com/question/ units and measurements class 11,dimensional analysis class 11,units and dimensions class 11,unit and dimension class 11,unit and dimension class 11 in hindi,units and measurement,units and measurements,dimensional analysis physics,units and dimensions neet,units and dimensions in hindi,roshni mam physics,units and measurements jee mains questions,neet mcq tricks,units and measurements numericals,units and measurements questions for neet Timestamps:- 0:00 Introduction 1:12 NEET 3:56 JEE Adv. 17:46 COMEDK 22:09 KVPY 25:12 JEE Mains 32:45 BITSAT 34:14 NEET 36:44 JEE Mains 39:20 BITSAT 41:09 JEE Adv. Questions on states of matter chapter from ncert and from previous competitive exams like JEE( Mains, Advanced) , NEET etc. In this video, we will cover.In this video we will cover:- 1.If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be (a)[Ev−2T−2] (b)[E2vT−2] (c) [Ev−2T−1](d) [E−2v−2T−1] 2.In an experiment to determine the acceleration due to gravity g, the formula used for the time period of a periodic motion is T=2π√ (7R−r)/(5g). The values of R and r are measured to be (60±1) mm and (10±1) mm, respectively. In five successive measurement, the time period is found to be 0.52s,0.56s,0.57s,0.54sand0.59s. the least count of the watch used for the measurement of time period is 0.01s. Which of the following statement (s) is (are) true? 3.The dimensions of [a/b] in the equation P =(a-t2)/(bx) where P is the pressure x is distance and t is time are: - (a)[M-1L0T-2] (b)[ML0T-2] (c)[ML0T2] (d)[MLT-2] 4.The length and width of a rectangular room are measured to be 3.95±0.05 m and 3.05±0.05 m, respectively, the area of the floor is (a) 12.05±0.01 m2 (b) 12.05±0.005 m2 (c) 12.05±0.34 m2 (d) 12.05±0.40 m2 5.If the capacitance of a nanocapacitor is measured in terms of a unit u made by combining the electric charge e, Bohr radius a0, Planck’s constant ‘h’ and speed of light ‘c’ then (a)u=(e2c)/(ha0) (b)u=(e2h)/(ca0) (c) u=(e2a0)/(hc) (d)u=(hc)/(e2a0) 6.Which one of the following is not a unit of Young’s modulus? (a)Nm-1 (b)Nm-2 (c)dyne cm-2(d)mega pascal 7.Which two of the following five physical parameters have the same dimensions? (i)Energy density (ii)Refractive Index (iii)Dielectric constant (iv)Young’s modulus (v)Magnetic field 8.The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 1%, the maximum error in determining the density is. 9.A force F is given by F=at+bt2 , where t is time . What are the dimensions of a and b? 10.A person measures the depth of a well by measuring the time interval between dropping a stone and receiving the sound of impact with the bottom of the well. The error in his measurement of time is δT= 0.01 seconds and he measures the depth of the well to be L= 20 meters. Take the acceleration due to gravity g = 10 ms-2 and the velocity of sound is 300 ms-1. Then the fractional error in the measurement, (δL/L), is closest to LearnoHub.com (formerly called ExamFear Education) is a Free Education platform with more than 6000 videos on Physics, Chemistry, Maths, Biology, English, Science experiments, tips & tricks and motivational videos for Classes 6 to 12. Learn for Free! Website: http://www.learnohub.com Facebook: https://bit.ly/LearnoHubFB Instagram: https://bit.ly/LearnoHubInsta Get Our Videos in Pendrives: Class 11 - https://bit.ly/LHPenDrive11 Post your doubts here: https://www.examfear.com/question/ Join our Telegram Group: LearnoHub - 11: https://t.me/LearnoHub11 About the Teacher: Roshni Mukherjee, the Founder-Educator at LearnoHub has been building this free learning platform since 2011. She has been recognised as one of the 100 Women Achievers of India by the Ministry of Women & Child Development and felicitated by the President of India in 2016. Roshni has been invited by Google to speak at Global Education Symposium 2017 held at Google Headquarters, California. Limca Book of Records also recognized our work. Watch Roshni's Tedx Talk to know more about her journey: https://www.youtube.com/watch?v=v2sW_... #LearnoHubChemistry #SabkoSamajhAayega #FREEhaiParBESThai #CBSEClass11Physics Join us and let us together build this Free Learning Platform! We will surely ensure that you enjoy the real learning with us. Copyright © All rights reserved. LearnoHub | ExamFear Education "