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General
Easy
Question
Figure shown plane waves refracted for air to water using Huygen's principle a, b, c, d, e are lengths on the diagram. The refractive index of water wrt air is the ratio.
- a/e
- b/e
- b/d
- d/b
The correct answer is: b/d
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Two point monochromatic and coherent sources of light of wavelength l are placed on the dotted line in front of an large screen. The source emit waves in phase with each other. The distance between S1 and S2 is 'd' while their distance from the screen is much larger. Then,
1) 
If d = 7
/2, O will be a minima
2) If d = 4.3, there will be a total of 8 minima on y axis.
3) If d = 7, O will be a maxima.
4) If d =, there will be only one maxima on the screen.
Which is the set of correct statement :
Two point monochromatic and coherent sources of light of wavelength l are placed on the dotted line in front of an large screen. The source emit waves in phase with each other. The distance between S1 and S2 is 'd' while their distance from the screen is much larger. Then,
1) If d = 7/2, O will be a minima
2) If d = 4.3, there will be a total of 8 minima on y axis.
3) If d = 7, O will be a maxima.
4) If d =, there will be only one maxima on the screen.
Which is the set of correct statement :
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In the figure, the block of mass m, attached to the spring of stiffness k is in contact with the completely elastic wall, and the compression in the spring is 'e'. The spring is compressed further by 'e' by displacing the block towards left and is then released. If the collision between the block and the wall is completely elastic then the time period of oscillations of the block will be:
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N/m attached to 2 Kg block at rest kept on a smooth floor. The time for which rear moving block remain in contact with spring will be
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A particle performing SHM is found at its equilibrium at t = 1sec. and it is found to have a speed of 0.25 m/s at t = 2 sec. If the period of oscillation is 6 sec. Calculate amplitude of oscillation
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The graphs in figure show that a quantity y varies with displacement d in a system undergoing simple harmonic motion.
I) 
II) 
III) 
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I)
II)
III)
IV)
The total energy of the system
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Choose the correct statement(s)
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Choose the correct statement(s)
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