Q. What is the minimum distance (in metres) required to hear an echo?
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Q. Negative feedback in amplifiers
Q. Which of the following represents the equation for position-time relation ?
Q. Which among the given is not characteristic of resonance?
Q. Who among the following developed the technology of underground nuclear explosion ?
Q. Which colour is the complementary colour of yellow ?
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Q. What are the oscillations of a body whose amplitude goes on decreasing with time called as?
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