Units and measurements class 11 | Chapter 2 Physics | CBSE JEE NEET - One Shot

Watch the entire playlist for Class 11:

Timestamps:-
0:00 Introduction
8:32 Base Unit
9:07 Derived Unit
9:31 SI Units
11:21 SI Base Units
11:57 Measurement:Length
13:42 Parallax Method
14:29 Ex1
20:31 Range of Length
21:49 Measurement:Mass
23:18 Range of Mass
23:42 Measurement:Time
24:32 Accuracy & Precision
28:50 Error
30:00 Systematic Errors.
33:07 Minimize Systematic Errors
33:43 Random Errors
34:32 L.C.Errors
38:24 Absolute Error
41:49 Relative Error
43:22 Percentage Error
44:10 Ex 2
47:36 Combination of Errors
49:32 Ex 3
51:10 Significant Figures
53:40 Sig.Fig.:Rules
58:06 Ambiguous:Sig.Fig.
59:50 Scientific Notation
1:03:14: Sig.Fig.Arith.Op.
1:05:32 Rounding Off
1:12:03 Ex 3
1:13:37 Dimensions
1:14:21 Dimensions:Phy.World
1:15:05 Dimensional Formula
1:16:54 Dimensional Equations
1:18:02 App:Dimensional Formula.
1:20:19 Dimensional:Con.
1:21:24 Dim. & Non-Dim.:Constants

All the physical quantities are given by a few fundamental quantities or their combinations. The units of such fundamental quantities are called base units, combinations of them being called derived units. The system in which length, mass and time is adopted as the basic quantities, and from which the units of other quantities are derived, is called the absolute system of units.In the SI system of units the first three fundamental dimensions are mass, length and time. The units used to measure these dimensions (and their abbreviations) are defined to be the kilogram (kg), the meter (m) and the second (s).Dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric charge) and units of measure.All instruments have a smallest increment that can be detected. This smallest increment is called the least- count of the instrument. A meter stick has markings every millimeter (0.001 meter) so its least-count is 0.001 meter. In this video we will cover:-
1.Introduction to physical and non-physical quantities.
2.What are Base units?
3.What are derived units?
4.What do we mean by SI units?
5.How many base units are there?
6.How to measure Length?
7.What is Parallax method?
8.The moon is observed from two diametrically opposite points A and B on Earth. The angle θ subtended at the
moon by the two directions of observation is 1o 54′. Given the diameter of the Earth to be about 1.276 × 107
m, compute the distance of the moon from the Earth.
9.How to calculate range of length?
10.How to measure mass?
11. What is range of mass?
12.How to measure Time?
13.Accuracy & Precision in instruments.
14.Explain Errors?
15.Different types of errors.
16.What are systematic errors?
17.How to minimize systematic errors?
18.What are random errors?
19.Define Least Count Errors?
20.What are absolute errors?
21.What are relative errors?
22.What are percentage errors?
23. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71s and 2.80 s. Calculate the absolute errors,relative error or percentage error.
24.Combining of Errors.
25.Find the relative error in g, T=2π sqrt(L/g)
26.What are significant figures?
27.Rules defining Significant Figures.
28.Change of units doesn't change Significant figures.
29.Ambiguities in Significant Figures.
30.How to write number in scientific notation?
31.Rules for arithmetic operations in Significant Figures.
32.Rounding off Uncertain digits.
33.Calculate the surface area of a cube where side measures 7.203m.
34.Dimensions of physical quantities.
35.Dimensions of Physical World.
36.How do we write Dimensional Formula?
37.How to write Dimensional Equations?
38.Applications of Dimensional Analysis.
39.Conclusion of Dimensional Analysis.
40.Dimensional & Non-Dimensional constants.

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[Deepanjanasinghh]

Never expected that PCB k baad bhi maths milegi.. Physics k roop me😂😂

[a.k]

Timestamps:-
0:00 Introduction
8:32 Base Unit
9:07 Derived Unit
9:31 SI Units
11:21 SI Base Units
11:57 Measurement:Length
13:42 Parallax Method
14:29 Ex1
20:31 Range of Length
21:49 Measurement:Mass
23:18 Range of Mass
23:42 Measurement:Time
24:32 Accuracy & Precision
28:50 Error
30:00 Systematic Errors.
33:07 Minimize Systematic Errors
33:43 Random Errors
34:32 L.C.Errors
38:24 Absolute Error
41:49 Relative Error
43:22 Percentage Error
44:10 Ex 2
47:36 Combination of Errors
49:32 Ex 3
51:10 Significant Figures
53:40 Sig.Fig.:Rules
58:06 Ambiguous:Sig.Fig.
59:50 Scientific Notation
1:03:14: Sig.Fig.Arith.Op.
1:05:32 Rounding Off
1:12:03 Ex 3
1:13:37 Dimensions
1:14:21 Dimensions:Phy.World
1:15:05 Dimensional Formula
1:16:54 Dimensional Equations
1:18:02 App:Dimensional Formula.
1:20:19 Dimensional:Con.
1:21:24 Dim. & Non-Dim.:Constants

nice video mam . thanku very much for a video channel for 11 th thanku mam,

[shauryakgclass]

I chose PCB coz I don't like maths,
But when I open physics chapter - 2
Then, I say -- Oo bhyii maaro mujhe maaro, nahi ekk second ye mzaak hora h, !! 🤦😂😂

[Sidd_plays_]

Sabhi 11 walo (2023 - 24 batch) ko mera namaskar 🙏🏻



Edit : 💀💀💀itni likes kase mil gyi mujhe

[aspirant]

Nostalgia.❤ ... I had seen this lecture 2 years ago when I started jee preparation and now going to give jee exam ..near the end of preparation again heare ..duniya gol hai 😂

[akbhai]

Who are starting in feb
They are Legend

[sofynaz]

1.Introduction to physical and non-physical quantities.
2.What are Base units?
3.What are derived units?
4.What do we mean by SI units?
5.How many base units are there?
6.How to measure Length?
7.What is Parallax method?
8.The moon is observed from two diametrically opposite points A and B on Earth. The angle θ subtended at the
moon by the two directions of observation is 1o 54′. Given the diameter of the Earth to be about 1.276 × 107
m, compute the distance of the moon from the Earth.
9.How to calculate range of length?
10.How to measure mass?
11. What is range of mass?
12.How to measure Time?
13.Accuracy & Precision in instruments.
14.Explain Errors?
15.Different types of errors.
16.What are systematic errors?
17.How to minimize systematic errors?
18.What are random errors?
19.Define Least Count Errors?
20.What are absolute errors?
21.What are relative errors?
22.What are percentage errors?
23. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71s and 2.80 s. Calculate the absolute errors, relative error or percentage error.
24.Combining of Errors.
25.Find the relative error in g, T=2π sqrt(L/g)
26.What are significant figures?
27.Rules defining Significant Figures.
28.Change of units doesn't change Significant figures.
29.Ambiguities in Significant Figures.
30.How to write number in scientific notation?
31.Rules for arithmetic operations in Significant Figures.
32.Rounding off Uncertain digits.
33.Calculate the surface area of a cube where side measures 7.203m.
34.Dimensions of physical quantities.
35.Dimensions of Physical World.
36.How do we write Dimensional Formula?
37.How to write Dimensional Equations?
38.Applications of Dimensional Analysis.
39.Conclusion of Dimensional Analysis.
40.Dimensional & Non-Dimensional constants.

[rutujabansode]

demensional formula of pressure is [M] [L-1] [T-2]

[Amanpandey-kstg]

Who is on 9th March .. tomorrow is my physics paper..🥺
Hope I will pass..
Some of here are Still busy in Reading and liking comments..😂

[yashlandge]

The example in which we have to find absolute error, relative error, etc if we calculate it accurately then the mean absolute error is 0.8933 and the percentage error is 3.61 percent

[ot-hevn]

I know many students will watch it before somedays of exam bcz they still not know worth of time but who is starting from begning of year will sure keep everything on their mind and get very good marks and feel very light I know bcz in 10th I only studied before 15 days of exam in both term and didn't get good marks and I am ending up regreting if I studied from begning little little it won't be like this I won't feel embarrassing seeing my results

But from now on my future is in my hands I will do my best 💜💜

[SankeerthanK]

Hy!
Welcome 2024-25 batch!!
Let's make this batch an unforgettable journey..
Class 10th m kamaal kr diya hai.. 😁
Ab class 11th fodte hai.. 🔥
KSHS✌

[asthadubey]

Ma'am, you are teaching like a Mother.
Really appreciating,
Keep it up for your childrens.

[karansidhu]

I started my physics on 30/jan/2021. Hope i will pass!😂🤟🏻🔥

[mazebank]

"WHAT A VIDEO MAM" mind blowing

[yuvcdrag]

mai pkka akela hu jo 1 dinn phele physics exam ke ye video dekhra hu...everyone else is a topper xd

[potrainplayzz]

Arjuna student here 😅
Exam hai kal isliye idhar se padh raha hu...😅

[pratyush]

Class 11 2023-24 students attendance here who come 1day before there exams 😂

[namannlifts]

I think you hard work should be surely appreciated
I am finally able to complete the chapter
Thanks a lot

[archit.vlogs-]

Koan koan 😅
August se video dekh rha hai😅😅
😂😂