JEE Main 2014 · 11 Apr · Shift 1 · Physics Q24

← JEE Main 2014 · 11 Apr · Shift 1

PhysicsSingle correct+4 / -1Question 24 of 90

Two monochromatic light beams of intensity 16 and 9 units are interfering. The ratio of intensities of bright and dark parts of the resultant pattern is :

\dfrac{16}9

\dfrac43

\dfrac71

\dfrac{49}1

Answer and worked solution

Official answer: D

Amplitudes are proportional to 4 and 3, so
$\frac{I_{\max}}{I_{\min}}=\frac{(4+3)^2}{(4-3)^2}=\frac{49}1.$

Topics:Interference and Young's double slit

← Previous question Next question →

JEE Main 2014 · 11 Apr · Shift 1, Physics question 24