Question

A source delivers 104 w/m² electromagnetic
radiations on a circular plate of radius 7cm making
an angle 30° with the radiations. The
electromagnetic flux received by the surface
1) 77w 2) 154 w 3) 7.7 w 4) 1.54 w​

Answer 1

Explanation:

1. if thita and bitta are the roots of the equation 3x^2+x-10=0 then the value of 1/bitta + 1/thitta is ........a)10 , b) -1/10, c) 1/10, d) 1/3