`23.54times10=` (c) `8.352times100=`

A 15pF capacitor is connected to a 60V battery.How much electrostatic energy is stored? (A) 2.70times10^(-8)J (B) 1.77times10^(-8)J (C) 2.35times10^(-8)J (D) 1.35times10^(-8)J

If 10% of total electrons from 54gm Water are removed then find total charge in it :- (A) 288times10^(4)cb (B) 2.88times10^(4)cb (C) 28.8times10^(4)cb (D) 2880times10^(4)cb

5times1000+0times100+10+8times1 =

The correct expanded form of "9.06" is (a) (9times10)+(6times(1)/(10)) , (b) (9times1)+(6times(1)/(10)) (c) (9times1)+(6times(1)/(100)) , (d) (9times10)+(6times(1)/(100))

A vertical glass tube,closed at the bottom contains mercury to a height of 100cm at 30^(@)C , The height of mercury column at 50^(@)C is (gamma for Hg=1.8times10^(-4)/^(@)C , alpha_(g)=8times10^(-6)/^(@)C)

How many significant figures are there in the following (a) 6.022 xx 10^(23) , (b) 0.080, (c ) 8.002

Express the following numbers in usual form. (i) 3.52 xx 10^2 (ii) 7.54 xx 10^-4 (iii) 3 xx 10^(05)

If 40.6g of a hydrocarbon contains \(4.2\times10^{23}\) molecules, then the hydrocarbon can be \([N_{A}=6\times10^{23}\)] \(C_{2}H_{2}\) \(C_{3}H_{8}\) \(C_{4}H_{10}\) \(C_{2}H_{6}\)