List of top Physics Questions on Wave optics asked in KCET

Due to Doppler?? effect the shift in wavelength observed is 0.1 ? for a star producing wavelength 6000 ?. Velocity of recession of the star will be

In a Fraunhofer diffraction at a single slit, if yellow light illuminating the slit is replaced by blue light, then diffraction bands

According to Huygen's principle, during refraction of light from air to a denser medium

For sustained interference fringes in double slit experiment, essential condition/s is/are (1) sources must be coherent (2) the intensities of the two sources must be equal Here, the correct option/s is/are

In single slit experiment, the width of the slit is reduced. Then, the linear width of the principal maxima

In Young's double slit experiment, fringes of width $\beta$ are produced on a screen kept at a distance of 1 m from the slit. When the screen is moved away by $5 \times 10^{-2}$ m, fringe width changes by $3 \times10^{-5}$ m. The separation between the slits is $1 \times10^{-3} m$. The wavelength of the light used is

A parallel beam of light of wavelength $6000\, ?$ gets diffracted by a single slit of width $0.3 \,mm$. The angular position of the first minima of diffracted light is

Consider the following statements in case of Young's double slit experiment. a) A slit $S$ is necessary if we use an ordinary extended source of light. b) A slit $S$ is not needed if we use an ordinary but well collimated beam of light. c) A slit $S$ is not needed if we use a spatially coherent source of light. Which of the above statements are correct?

Wavefront is the locus of all points, where the particles of the medium vibrate with the same

Critical angle for certain medium is $Sin ^{-1}$ $(0.6)$. The polarizing angle of that medium is .......

Two luminous point sources separated by a certain distance are at $10 \, km$ from an observer. If the aperture of his eye is $2.5 \times 10^{-3}\,m$ and the wavelength of light used is $500 \, nm$, the distance of separation between the point sources are just seen to be resolved is

In Young?? double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits 0.589 mm apart, the half angular width of the central maximum is

Light from two coherent sources of the same amplitude $A$ and wavelength $\lambda$ illuminates the screen. The intensity of the central maximum is $I_0$. If the sources were incoherent, the intensity at the same point will be

A single slit Fraunhoffer diffraction pattern is formed with white light. For what wavelength of light the third secondary maximum in the diffraction pattern coincides with the second secondary maximum in the pattern for red light of wavelength $6500 \, \mathring{A}$ ?

The head lights of a jeep are $1.2\, m$ apart. If the pupil of the eye of an observer has a diameter of $2\, mm$ and light of wavelength $5896\, ?$ is used, what should be the maximum distance of the jeep from the observer if the two head lights are just separated?

When the angle of incidence is $60^\circ$ on the surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is

A beam of light of wavelength $600\, nm$ from a distant source falls on a single slit $1\, mm$ wide and the resulting diffraction pattern is observed on a screen $2\, m$ away. The distance between the first dark fringes on either side of the central bright fringe is

As a result of interference of two coherent sources of light, energy is

Yellow light is used in single slit diffraction experiment with slit width 0.6 mm. If yellow light is replaced by X-ray then the pattern reveals

The phenomenon of rotation of plane polarised light is called

In Young's double slit experiment, the central bright fringe can be identified

When one of the slits of Young's experiment is covered with a transparent sheet of thickness 4.8 mm, the central fringe shifts to a position originally occupied by the 30th bright fringe. What should be the thickness of the sheet if the central fringe has to shift to the position occupied by 20th bright fringe ?

A $20 \,cm$ length of a certain solution causes right-handed rotation of $38^\circ$. A $30\, cm$ length of another solution causes left-handed rotation of $24^\circ$. The optical rotation caused by $30\, cm$ length of a mixture of the above solutions in the volume ratio $1 : 2$ is

If white light is used in Young's double-slit experiment,