Mass of proton is ____
`9.11 xx 10-^28gm` `square`
`1.675xx 10^-24`gm`square`
`1.6725 xx 10^-24`gm `square`

(-11) xx (-12) xx (-2) = square

What is the de Broglie wavelength related to an electron of energy 100 eV ? (Given, mass of electron, m = 9.1 xx 10^(-31) kg, " " e = 1.6 xx 10^(-19) C and h = 6.63 xx 10^(-34) J.s )

The- mass of a proton and an electron are 1.67 xx 10^(-24) g and 9.11 xx 10^(-28) respectively. Calculate the ratio of their wavelengths if the proton is, moving with half the velocity of the electron.

(-6) xx (-10) + (-4) xx 4 = square

A proton and electron have kinetic energy equal to 10^5 eV and 10^4 eV respectively. Which of them moves faster ? Also calculate the ratio of their speeds. Given, mass of electron =9.11xx10^(-31) kg , mass of proton =1.67xx10^(-27) kg and 1eV =1.6xx10^(-19) Joule.

(-7) xx 7 + 12 xx (-8) = square

Let's calculate mentally. 9 xx 98 = 9 xx (100-2) = square xx square - square xx square = square

(-20) xx 11 + (-35) xx 20 = square

Let us verify 6 xx (-8) = square = square

Let’s find the value of 9 xx (-12) = square = square .