Partial preview of the text
Download Physics Short notes units and measurement and more Summaries Physics in PDF only on Docsity!
Unit 1 Physi i——».—Measurem me MM 6.66XI0 Ne Kg? le>The Gravitational Force = Me i cum of grated) = The Elect xomegneHe Force Pade, ot Fi ' amretivity oF Fre fo= B.OUXIOo ey tm (Cabroulate permiveluisy Ort 4%. = electhic charges Je = distance ~ —- Law of contervation of lineas momentum P,+ P, = constant =D Law of conservation of Energy B= MCX Speed of => Law.of conservation of angulas momentum Tw = constant w= angular velocity D Nu= constant oR nuh = Ms UW, AX NOTE ° A Solar day ig defined ag the time that elabsec of two conse cutlve days ond the mean cae aon ie the average the Solar days in One complete year. 0 © A Second ,o% better Call ed @ mean Solax Second, is __1| th OR ae part oF @ mean colar olay |5no Supplementar iis poe oe Physical Quantity al Symbol/ abbreviation 1. | Plane angle Hadfan 2.1! Solid angle Steradian Hod LOM:W = 1-66 X lo *ka 1 shake = 108s Q-™M-U = atomic mass unit 4 solar doy = 86,400s 4 Solar year = 365 + solav days 1 fexmi or femtometre (fm) = [om 1 angttrom (A) = Io''m 1 micson ox micromette Cum) = 10m 1 astronomical unit (AU) = 14464 10'm y 4 light year = 9-46 x10'%m = ~ 1 pavallactic second (parcec) = 3:08 xX [0'm a - n |\@DIne distance of ‘moon fom the eazth s= SKE N 3x 10% mo! = (velocity of lags beam) |@> To find the thickness of a matter sheet d= SX Kt + = velocity of the Signal | @ i height. of a distant n> roid te tet ofa dita h= Xtand a I» @ Exror in addition and Subtraction EOF in multiplication and Division |8 Error in Power of measured Quantity AZ = ™ & Estimation of Maximum £7707 bY 2 {3 do + fab AC x 100 ears 100 [3 ba x 400 | [sb x 100] + (> sex J c>Experimental % Evror Real value ~ Cxper imental value y joy Real Value ED Enexgy of photon E= hy v= frequency of light TAU = 1496X 10"m 
