Huygens wave theory and wavefront - class-XI
| Description: huygens wave theory and wavefront | |
| Number of Questions: 52 | |
| Created by: Ashok Dhingra | |
| Tags: oscillations and waves optics physics wave optics |
Choose the Correct answer from alternative given.
The phenomena which is not explained by Huygen's construction of wavefront.
Choose the Correct answer from alternative given.
Wavefront is the locus of all points, where the particles of the medium vibrate with the same
Choose the Correct answer from alternative given.
The idea of secondary wavelets for the propagation of a wave was first given by:
The phenomena which is not explained by Huygen's construction of the wavefront
Wavefront is the locus of all points, where the particles of the medium vibrate with the same.
The wavelength of characteristic $X \text { -ray } K _ { \alpha }$ a line emitted by hydrogen like atom is $0.32 \mathrm { A } ^{ \circ }$. The wavelength of $K _ { \beta }$ line emitted by the same element is
A transverse wave travelling in a denser medium is reflected from a rarer medium. Then,
The radius of a wavefront as the waves propagate
Huygens principle of secondary waves
The wave front due to a source situated at infinity is :
Which of the following phenomena can be used to analyse a beam of light into its component wavelength?
Huygen's concept of wavelets is useful in
Ray optics is valid when characteristic dimensions are
Who first proposed that light was wave-like in character ?
A : The phase difference between any two points on a wave front is zero
R : From the source light, reaches every point on the wave front in the same time.
1: Primary waves can travel in all directions in an ether
2: Secondary waves can travel only in backward in an ether
According to Huygens, the ether medium pervading entire universe is
The wave theory of light, in its original form, was first postulated by.
Which experiment seemed to make it clear that light propogates as a wave?
Wave front formed by the collimator of a spectrometer
Indentify the correct statement from the following
Huygen's concept of secondary wave
The wavefront of a lightbeam is given by the equation $x+2y+3z=c$,(where c is arbitary constant) the angle made by the direction of light with the y-axis is:
In which of the following cases do we obtain a plane wave front?
The two coherent sources of equal intensity produce maximum intensity of $100$ units at a point. If the intensity of one of the sources is reduced by $50\%$ by reducing its width then the intensity of light at the same point will be
For what distance ray optics a good approximation when the aperture is 4 mm wide and the wavelength is 500nm?
A monochromatic light is incident on a single slit of width $24\times 10^{-5}\ cm$. Calculate wavelength of light if angular position of $1^{st}$ secondary maxima is $30^{o}$.
At the first minimum adjacent to the central maximum of a single slit diffraction plate the phase difference between the huygens wavelet from the edge of the slit and the wavelet from the midpoint of the slate
If light waves emitted by an ordinary source, for what period of time, the phase remains constant :-
According to Huygen's theory of light
In the case of parallel beam,
Huygen's theory of light
According to huygen's theory of secondary waves,following can be explained-
Huygen's theory of secondary waves can be used of find-
Huygen's theory of secondary waves can be used to find-
Coherent sources can be obtained:
The wave theory in its original form was first postulated by
Assertion $(A):$ Microwaves are better carries of signals than optical waves
Reason $(R):$ Microwaves move faster than optical waves
A wave pulse traveling on a two piece string, gets partially reflected and partially transmitted at the junction. The reflected wave is inverted in shape as compared to incident one. If the incident wave has wavelength $\lambda$ and transmitted wave has $\lambda ',$ then
The wave front due to a point source at a finite distance from the source is -
Particle nature and wave nature of electomagnetic waves can be shown by
Which of the following statements indicates that light waves are transverse
On a hot summer night,the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally , the Huygen's principle leads us to conclude that as it travel,the light beam:
Huygens' principle is used to
When light suffers reflection at the interface between water and glass, the change of phase in the reflected wave is
On reflection from a plane surface, the following two characteristics get changed :
Huygen's originally thought that for the propagation of light waves wavefront is required.
The wave theory of Light was proposed by ...............
Who proposed wave nature of light ?
The shape of the nodal curves is
Mark the CORRECT statements(s)
A: The corpuscular theory fails in explaining the velocities of light in air and water.
B: According to corpuscular theory, the light should travel faster in a 'denser medium than in a rarer medium.