The electric field of an electromagnetic radiation is given by E = E_o cos(omega

Question

The electric field of an electromagnetic radiation is given by E = E_o cos(omegat - kx). To write a MAT LAB program to plot the electric field as a function of time at x = 0. For frequency f = 1 Hz and amplitude of the electric field is 2 N/C. The magnitude of electric field can be expresses in MAT LAB as E-2*cos(2*pi*t) b) E-2*cos(pi*t) c) E=cos(4*pi*t) d) E=2*cos(4*pi*t) none of the above The expression S = sigma^100_n = 1 n is equivalent to one the following MAT LAB algebraic expression S = 1OO*1O1 S = 100*101/2 S = 51*101 S = 5005 none of the above What is the outcome of the following MAT LAB program is equivalent to the algebraic MATALAB expression given below? 25*51*3 50*51*3 3*101*50 3*101*25 None of the above

Explanation / Answer

4.d

E=2*cos(4*pi*t)

5.

ans)b correct

the sumation of 1 to 100 numbers as n(n+1)/2 as 100*101/2

6)

ans)a is correct

why because the for loop runs for 50 times for sum and each time it adds the triple of first 50 natural number i..e.,

3+6+9+12.....+150

3*(1+2+3+....+50)

3*(50*51/2)

3*25*51

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