Question

к xx x
26. Electric field at the centre 'O' of a semicircle of rad
'a' having linear charge density is given as :-
*
XX
+
22
(1)
an
E a
(2)
E a
2
L3
2
211 Eo a
(4)
TT Eo a​

Answer 1

the diameter of the sun is 1. 392×10 to the power 9 and the diameter of the earth is 1.275×10 so find the approx ratio

Solution :

The given expression is

. <br> Here ,

<br> We split -22 into two parts whose sum is -22 and product 72. <br> Clearly,

<br>

<br>

<br>

. <br> Hence ,

.