Units and Dimensions, Cheat Sheet of Physics

Notes from the chapter: Units and Dimensions from class XI, includes all the main topics in crisp and concise form

Typology: Cheat Sheet

2025/2026

Available from 05/10/2026

Kbeer
Kbeer 🇮🇳

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bg1
RRs
ot
meaunement
is
espessed
y a
nun
aceeanied
yanit.
Units
Ey
Measwements
INTERNATIONA
L
SYSTEM
OF
UNITS:
*Cns
Aystern
Cemtimeter,
Gram,
secend
[nassian ytem
"
FPS
Astern
foot,
Poundl,
Aecenl
[Biishhayste]
"MKSAystem:
meter,
Kiloam,
sLond
[Methie
bysterm]
Snternational
yte
nits
SI):
tunlarnental
inits
e2suplomnentay
s
iy
Lengh
ii)
Mas
iv)
lecthic
auhent
v)
vi)
Arnent
at
substance
vij
Lumine
inteniy
A
Aupplementay
nit
modiynamic
tempehature -
kelin
ERRORS:
i)
Plon
angla
de)
anc(ds)
/hadius()
ii)
Aslid
angled
j
Jntercapted
area
(dA)
/hadiws-()
"itbeenee
b)wthe tnue
Emeashad
value
-
bsteMotie
no
ihe
aitue
nugative.
-
Randemkre
to
Rondoluctuaigns
Aanan-ameon
mete
-deasteunt
hhes
to
thesnallet liniting vale
ot
he
ithuennt
mesie
Relativemo amean
Riùogam
seconn
Alossute
(Aan)
Ralotie
Epercentage
e
amean
Percentage
endamaan
x10
Candela
ameam
"Cornyinotio,ot
A
-Suna
dieeZ
AA+AB
-
prsdut
oauotent
AZ
AA
+AB
es
pf2

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RRs (^) ot

meaunement is^ espessed y a nun

aceeanied yanit. Units Ey Measwements INTERNATIONA L^ SYSTEM OF (^) UNITS: *Cns (^) Aystern (^) Cemtimeter, (^) Gram, secend (^) [nassian (^) ytem " (^) FPS (^) Astern (^) foot, Poundl, (^) Aecenl

[Biishhayste]

"MKSAystem: meter, Kiloam,sLond [Methie bysterm]

Snternational yte nits SI):

tunlarnental inits e2suplomnentay s iy Lengh ii) Mas iv) lecthic auhent v) vi) Arnent at substance vij Lumine inteniy AAupplementay nit modiynamic tempehature - kelin ERRORS: i) Plon (^) angla (^) de) (^) anc(ds) (^) /hadius() ii) (^) Aslid (^) angled j (^) Jntercapted area (dA) /hadiws-() "itbeenee b)wthe tnue Emeashad value

  • (^) bsteMotie no (^) ihe aitue (^) nugative.

Randemkreto^ Rondoluctuaigns

Aanan-ameon

mete -deasteunt hhes to thesnallet liniting vale ot heithuennt mesie Relativemo amean Riùogam seconn Alossute (^) (Aan) (^) RalotieEpercentage e amean Percentage endamaan x Candela ameam

"Cornyinotio,ot

A -Suna dieeZ AA+AB

  • prsdut oauotent AZ^ AA (^) +AB es

3iGNIFICANT FIGURESi Aigis whee alue aneaccuately hnown

lana thenet sigicamt higwies,eater the acwacy

i) (^) Nenzee digit sgnificant iiy Peuseh ot 10 ahent omiticont. ivydeading /thaning nces ot on deeimal digits aremt gita Thailing ereesotter duinalaenigngicant Anithmetie pehaties: i ftactiem /siotractiony final numhod hawe as mamy dainnal þlaces ay in she no. whast decimal places üj Muctipiation JAwuin: Final no. sheued hauwe as mamy Sf (^) cus the no. (^) whastsf:

"Rouning ott

i) <5 : Bhaaoing digit et unihand iiö= 5 resceding digit iseeni nchangd LEAST COUNT : "vERNIER CALIPER: 1L-C |MSD|VSD. t, mVsD = m Avd, 0.0l n DIMENSIONS n MSDMeting ) " APlicaiony: MS (Reading SEA "Priniple et onogeity :n "Dinensienless: -Putees -ThisenWemetre haties Sf

cte.

m’no-t diso 1ot em Cis = pte

diisimte

piteh/u

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