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प्रश्न
What is the shape of the wavefront in the following case?
Light emerging out of a convex lens when a point source is placed at its focus.
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उत्तर
The shape of the wavefront in the case of a light emerging out of a convex lens when a point source is placed at its focus is a parallel grid. This is shown in the given figure.
संबंधित प्रश्न
State Huygen’s principle.
State Huygens’s principle. Show, with the help of a suitable diagram, how this principle is used to obtain the diffraction pattern by a single slit.
Draw a plot of intensity distribution and explain clearly why the secondary maxima becomes weaker with increasing order (n) of the secondary maxima.
With what type of source of light are cylindrical wave fronts associated?
According to Huygen's construction, relation between old and new wavefront is ______.
What is the geometrical shape of the wavefront for:
- Light diverging from a point source?
- The pattern of wavefront of the light from a distant star intercepted by earth?
Answer the following question briefly and to the point:
What is the phase difference between any two points lying on the same wavefront?
Figure shows a standard two slit arrangement with slits S1, S2, P1, P2 are the two minima points on either side of P (Figure). At P2 on the screen, there is a hole and behind P2 is a second 2-slit arrangement with slits S3, S4 and a second screen behind them.
According to Huygens’s principle, the amplitude of secondary wavelets is ______.
What type of wavefronts are associated with a point source of light?
What did Christiaan Huygens discover about Saturn?
What is meant by the speed of the wave?
In what direction does the energy of a wave travel relative to its wavefront?
What kind of construction is Huygens' principle essentially?
What gives the new position of a wavefront at a later time in Huygens' construction?
What did Huygens argue about the amplitude of secondary wavelets?
How is Huygens' adhoc assumption about the backwave assessed?
