RPET Physics Solved Paper 2013

36. Question
Two waves of intensities I and 4 I superpose. The minimum and maximum intensities will respectively




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37. Question
Wavelength of light of frequency 100 Hz is




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38. Question
The magnifying power of a telescope is m. If the focal length of eyepiece is doubled, then the magnifying power will become




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39. Question
39. The displacement of oscillating body is given by y = A sin(B + Ct + D). The dimensions of ABCD are




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40. Question
Moment of inertia of a solid cylinder of length I and diameter D about an axis passing through its centre of gravity and perpendicular to its geometric axis is




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