Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit)
A. `asintheta=(lamda)/(2)`
B. `acostheta=(3lamda)/(2)`
C. `asintheta=lamda`
D. `asintheta=(3lamda)/(2)`
A. `asintheta=(lamda)/(2)`
B. `acostheta=(3lamda)/(2)`
C. `asintheta=lamda`
D. `asintheta=(3lamda)/(2)`
Correct Answer – D