Q. Which among the following determines the pitch of a sound?
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Q. Which among the given devices can be used to detect radiant heat
Q. A gap is left between two rails of a railway track to accommodate...... of the metal.
Q. Which one of the following is the CORRECT statement for superposition theorem ?
Q. The device used for measuring the wavelength of X-rays is
Q. Which among the given produces more severe burns
Q. Fleming's right hand rule is used to find the direction of the
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