Next question, those are Thara's question. Question says an electron falls from rest through a vertical distance h in a uniform electrical uniform and vertically upwards directed electric field e. So, uscabhadeh that now the direction of electric field is reverse keeping its magnitude same. Uscabhadeh amne kya kya proton is allowed to fall from rest in it through the same vertical distance h. So, it is a question that the time of fall of electron in comparison to the time of fall of proton will be, our option is smaller 5 times greater 10 times greater or equal. Now, simple question, here we will not understand that this is your region or your here electric field e. And then we have opposite the direction of the electric field in this region. Now, if this case, in this case, we have first case in this case that here an electron is taken, which we have released, so, why electron in this direction is forced, height is good, so, here it is time, it is t, so, we have time of t electron. Here, when your proton will fall, then we have to compare it to both of them and tell what will happen. Now, if we see here, then we can write the acceleration, force divided by mass, force will be qe divided by mass, this is your acceleration. If we use the second equation of Newton's equation, then what can we say, this is equal to ut plus half a t square, u is your zero, so, your s, j will go, j, your height is h, that will be equal to a t square, that is, your time is proportional half, that will be equal to 2h divided by a and a k value, if we keep qe into m, so, this is equal to the charge of both of us, and electric field is constant, we can say that your time is directly proportional to the mass, that means, time of time to compare, time of electron as compared to time of proton, so, we can write time of electron divided by time of proton will be equal to under root of mass of electron divided by mass of proton. Now, if we keep the value of mass here, so, we know that mass of electron 9 into 10 to the power minus 31 is in range, mass of proton 1.6 into 10 to the power minus 27 is in range. Now, if we notice, this is 10 to the power 4, minus 4, this means, when we get under root, then 10 to the power minus 2, the ratio will be equal to this, that means, time of electron will be less than time of proton, this fall time will be less than time. So, based on this, we can say that option number A smaller would be the right answer.