MCQ
If two light waves having same frequency have intensity ratio 4 : 1 and they interfere, the ratio of maximum to minimum intensity in the pattern will be
  •  9 : 1
  • B
    3 : 1
  • C
     25 : 9
  • D
    16 : 25

Answer

Correct option: A.
 9 : 1
 9 : 1

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A free nucleus of mass $24\,amu$ . emits a gamma photon (when initially at rest) the energy of the photon is $7\,MeV$ . The recoil energy of the nucleus in $keV$ is
A proton moving with a constant velocity, passes through a region of space without change in its velocity. If $E$ $\& B$ represent the electric and magnetic fields respectively, this region may have
The reading of the ideal voltmeter in the adjoining diagram will be
A ray of light travelling in water is incident on its surface open to air. The angle of incidence is $\theta$, which is less than the critical angle. Then there will be
Properly arrange the effects with their reasons
Effects Reasons
$(i)$ Rainbow formation $(a)$ Reflection
$(ii)$ Red colour of danger signals $(b)$ Scattering
$(iii)$ Different colours of thin oil film and soap bubbles $(c)$ Chromatic abberrations
$(iv)$ Coloured images formed by lenses $(d)$ Dispersion
$(v)$ Different colours of clouds $(e)$ Interference
The magnifying power of a telescope is $M$. If the focal length of the eye lens is doubled, then the magnifying power will be :
Two parallel plates separated by a distance of 5mm are kept at a potential difference of 50 V. A particle of mass $10^{-15}$ kg and charge $10^{-11}$ C Centers in it with a velocity $10^{7}$ m/s. The acceleration of the particle will be
A current $i$ is flowing in a straight conductor of length $L.$ The magnetic induction at a point on its axis at a distance $\frac {L}{4}$ from its centre will be
A particle of mass $1\ gm$ and charge $ - 0.1\,\mu C$ is projected from ground with a velocity $10\sqrt 2 $ at an $45^o$ with horizontal in the area having uniform electric field $1\ kV/cm$ in horizontal direction. Acceleration due to gravity is $10\ m/s^2$ in vertical downward direction. Select $INCORRECT$ statement
If $OP = 1\,\,cm$ and $OS = 2\,\, cm$, work done by electric field in shifting a point charge $\frac {4\sqrt 2}{27}\,\, μC$ from point $P$ to $S$ in given figure is