Two monochromatic light beams of intensity 16 | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Intensity $I \propto a^2$,where $a$ is the amplitude.Given $I_1 = 16$ and $I_2 = 9$.Thus,the ratio of amplitudes is $\frac{a_1}{a_2} = \sqrt{\frac

Vedclass · Accepted Answer

$49/1$

Vedclass · Answer

(D) Intensity $I \propto a^2$,where $a$ is the amplitude.Given $I_1 = 16$ and $I_2 = 9$.Thus,the ratio of amplitudes is $\frac{a_1}{a_2} = \sqrt{\frac{I_1}{I_2}} = \sqrt{\frac{16}{9}} = \frac{4}{3}$.Let $a_1 = 4k$ and $a_2 = 3k$.The intensity of bright fringes is $I_{max} = (a_1 + a_2)^2 = (4k + 3k)^2 = (7k)^2 = 49k^2$.The intensity of dark fringes is $I_{min} = (a_1 - a_2)^2 = (4k - 3k)^2 = (k)^2 = k^2$.The ratio of intensities is $\frac{I_{max}}{I_{min}} = \frac{49k^2}{k^2} = \frac{49}{1}$.

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

Similar Questions

Two coherent plane light waves of equal amplitude make a small angle $\alpha (\alpha \ll 1)$ with each other. They fall almost normally on a screen. If $\lambda$ is the wavelength of the light waves,the fringe width $\Delta x$ of the interference pattern of the two sets of waves on the screen is:

Which phenomena can be explained by the wave nature of light?

Light exhibits wave nature because...

$n$ identical waves each of intensity $I_0$ interfere with each other. The ratio of maximum intensities if the interference is $(i)$ coherent and $(ii)$ incoherent is:

Two coherent sources of light can be obtained by

Vedclass Test Series

Exam Paper Generator

Online Exam Module