Physics
Wave optics explores light phenomena like interference and diffraction. This hub features problems on Young's double slit experiment, Fresnel biprism, and single slit diffraction patterns. These topics regularly appear in physics sections of competitive exams.
Using monochromatic light of wavelength $\lambda $ an experimentalist sets up the Young's double sit experiment in three ways as shown, If the observes they $y=\beta $ the wavelenght of light used is
In young's double slit experiment, when two light waves form third minimum intensity, they have
For constructive interference to take place between two monochromatic light waves of wavelength $ \lambda $ , the path difference should be
A young double slit experiment uses a monochromatic source The shape of the interference fringes formed on a screen is
A slit of width $d$ is illuminated by white light. For red light ($\lambda = 6500 $), the first minima is obtained at $\theta = 30$. Then, the value of $d$ will be
A beam of light of $ \lambda=600 n m $ from a distant source falls on a single slit $1$ $ \mathrm{mm} $ wide and the resulting diffraction pattern is observed on a screen $2$ $ \mathrm{m} $ away. The distance between first dark fringes on either side of the central bright fringe is
A monochromatic light of $\lambda =5000{ A }^{ \circ }$ is incident on the slits separated by a distance $5\times { 10 }^{ -4 }m.$ The interference pattern is seen on a screen placed at a distance 1 m from the slits. A thin glass plate of thickness $1.5\times { 10 }^{ -6 }m$ and refractive index $\mu =1.5$ is placed between one of the slits and the screen. The lateral shift of the central maximum is
Two wavelengths of light of wavelength ${\lambda _1} = 4500\mathop {\text{A}}\limits^{\text{o}} $
and ${\lambda _2} = 6000\mathop {\text{A}}\limits^{\text{o}} $ are sent through a Young's double slit apparatus simultaneously then
In $YDSE$, slab of thickness $t$ and refractive index $\mu$ is placed in front of any slit. Then displacement of central maximum in terms of fringe width when light of wavelength $\lambda$ is incident on system is
Light of wavelength $ 5000 \mathring { A } $ passes through a slit of width 6.5 cm and forms a difference pattern with a lens of focal length 40 cm, held close to the slit.The distance between the first minimum and the first secondary maximum is
In Young's double slit experiment using monochromatic light the fringe pattern shifts by a certain distance on the screen when a mica sheet of a refractive index $1.6$ and thickness $1.964$ microns is introduced in the path of one of the interfering waves. The mica sheet is then removed and the distance between the plane of slits and the screen is doubled. It is found that the the distance between successive maxima (or minima) now is the same as the observed fringe shift upon the introduction of the mica sheet. The wavelength of the light will be
In Young's double slit experiment if monochromatic light used is replaced by white light, then
In Young's double slit experiment, the wavelength of red light $7500\overset {\circ}{A}$ and that of blue light is $5000\overset {\circ}{A}$. The value of $n$ for which $n^{th}$ bright band due to red light coincides with $(n + 1)^{th}$ bright band due to blue light, is
In $YDSE$ how many maxima can be obtained on the screen if wavelength of light used is $200\ nm$ and $d = 700\ nm$.