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Write the factors by which the resolving power of a telescope can be increased
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1
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5128
|
September 9, 2016
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A parallel beam of monochromatic light falls normally on a narrow slit
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1
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6700
|
September 9, 2016
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Yellow light ($\lambda $ = 6000 A) illuminates a single slit
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1
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4590
|
September 9, 2016
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A parallel beam of light of 500 run falls on a narrow slit
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1
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650
|
September 9, 2016
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Answer the following questions:
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1
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2271
|
September 9, 2016
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Write the distinguishing features between a diffraction pattern due to a single slit and the interference fringes produced in Young's double slit experiment
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0
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5535
|
September 9, 2016
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For a single slit of width "a", the first minimum of the interference
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1
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4084
|
September 9, 2016
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Name the phenomenon which is responsible for bending of light around sharp corners of an obstacle
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1
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3488
|
September 9, 2016
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For a given single slit, the diffraction pattern is obtained on a fixed screen
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1
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2186
|
September 9, 2016
|
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If a monochromatic source of light is replaced by white light, what change would you observe in the diffraction pattern
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0
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2942
|
September 9, 2016
|
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How does the angular separation between fringes in single-slit
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0
|
1239
|
September 9, 2016
|
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Write three characteristic features to distinguish between the interference fringes
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1
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5746
|
September 9, 2016
|
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In Young's double slit experiment, describe briefly how bright and dark fringes are obtained on the screen kept in front of a double slit
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1
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3882
|
September 9, 2016
|
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(ii) Compare the interference pattern observed in Young's double slit experiment with single slit diffraction pattern, pointing out three distinguishing features
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1
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9289
|
September 9, 2016
|
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(b) Hence obtain the conditions for constructive and destructive interferences
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1
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1246
|
September 9, 2016
|
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A beam of light consisting of two wavelengths 800 nm
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1
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3485
|
September 9, 2016
|
|
Laser light of wavelength 640 nm incident on a pair of slits produces an interference pattern in which the bright fringes are separated by 7.2 mm
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1
|
7932
|
September 9, 2016
|
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How does the fringe width get affected, if the entire experimental apparatus of Young is immersed in water?
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0
|
1799
|
September 9, 2016
|
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Define the term 'coherent sources' which are required to produce interference pattern in Young's double slit experiment
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0
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3123
|
September 9, 2016
|
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A) Define a wavefront How is it different from a ray?
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1
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13409
|
September 9, 2016
|
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Using Huygens's construction of secondary wavelets explain?
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1
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6171
|
September 9, 2016
|
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Use Huygens principle to verify the laws of refraction
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0
|
1414
|
September 9, 2016
|
|
Define the term wavefront State Huygens principle
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1
|
6155
|
September 9, 2016
|
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(i) State law of Malus
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1
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13280
|
September 9, 2016
|
|
State Huygen's principle. Using it, construct a ray diagram for a plane wave front getting incident on a denser medium
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0
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6029
|
September 9, 2016
|
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When monochromatic light travels from one medium to another its wavelength changes but frequency remains the same
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1
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4351
|
September 9, 2016
|
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Define the term wavefront
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0
|
1162
|
September 9, 2016
|
|
A compound microscope consists of an objective of focal length
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1
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6352
|
September 8, 2016
|
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Two convex lenses of same focal length but of apertures
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1
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2861
|
September 8, 2016
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Draw a schematic diagram
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1
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1616
|
September 8, 2016
|