`{:(,"Column I",,"Column II"),((A), 1 "fermi",(p),10^(-13) m),((B),1 "X-ray unit",(q),10^(-15) m),((C),1 "angstrom",(r),10^(-10) m),((D),1 "Astronomical unit",(s),9.46xx10^(15) m),((E),1 "Light year",(t),3.26 "Light year"),((F),1 "Parse",(u),3.08xx10^(16) m),(,,(v),1.49xx10^(11)m):}`

{:(, "column"-I,, "column-II"),((a) ,"change on electrons (magnitude)", (p) ,1.6022xx10^(-19)C),((b),ed//m_(e),(q),1.758820xx10^(11)CKg^(1)),((c ) , "mass of prton ".m_(p),(r),1.00867u),((d),"Mass of nueutron"m_(n),(s),1.00727u),(,,(t),4.8xx10^(-10)"esu"):}

Calculate the time taken by light to travel 1 astronomical unit (au =1.5xx10^(11) m)

1 AU=9.46xx10^15m True/False

Calculate the time taken by light to travel 1 astronomial unit (au 1=1.5xx10^(11)m )

How many Astronomical units are there in one light year? Given Data: 1 Astronomical unit =1.496xx10^(11)m 1 light year =9.46xx10^(15)m

In Column-I quantity and Column-II their value are given. Match them properly : {:("Column-I","Column-II"),("(1) 1 light year",(a) 3.08xx10^16m),("(2) 1 Parsec",(b) 9.46xx10^15m),("(3) A.U.",(c) 1.496xx10^11m):}

In the following physical units, how many units are there in 1 metre? (i) 1 Astronomical unit (AU =1.496xx10^(11)m (ii) 1 light year =9.467xx10^(15)m (iii) 1 micron (mu)=10^(-6)m (iv) 1 parallacti second (parsec) =3.08xx10^(16)m Given data: 1Au=1.496xx10^(11)m 11y=9.467xx10^(15)m 1mm=10^(-6)m 1 parsec =3.08xx10^(16)m