`400+5times10+1=`

5times1000+0times100+10+8times1 =

(1/5 div 1/10) times 1/18=

A coin is tossed 400 times and head appears 240 times. Test at 5% level of singificance about the unabiasedness of the coin.

" Treshold frequency for a metals is "5times10^(-14)S^(-1)" .Calculate the K.E.of excited electron when radiation of frequency "v=3times10^(15)S^(-1)

Simplify: 10^(-1)times10^(2)times10^(-3)times10^(4)times10^(-5)times10^(6)

Magnetic susceptibility of magnesium at 300K of temperature is 1.2times10^(-5) ,the magnetic susceptibility of magnesium at 30 K of temperature will be 1.2times10^(-3) 1.2times10^(-4) 1.2times10^(-5) 1.2times10^(4)

[" Four charges "10^(-3):-2times10^(-5);+3times10^(-5)" and "],[2times10^(-5)" coulomb are placed at the four "],[" corners of a square of side "1m" the potential "],[" at the centre of the square is "]

A photon of wavelength 400nm strikes a metal surface. The electrons are ejected with a velocity 5.85 xx 10^(5)ms^(-1) . Calculate the minimum energy required to remove an electron from the metal surface. The mass of an electron is 9.109 xx 10^(-31)kg .

A photon of wave length 400 nm strikes a metal surface. The electrons are ejected with a velocity 5.85 xx 10^5 ms^(-1) . Calculate the minimum energy required to remove an electron from the metal surface. The mass of an electron is 9.109 xx 10^-(31) kg_.