Assertion (A) : The location of the epicentre of an earthquake may be estimated using the time-lag between the arrival of ‘P’ and ‘S’ waves. Reason (R) : The ‘L’ wave cannot start until the ‘P’ wave hits the surface. Codes

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Assertion (A) : The location of the epicentre of an earthquake may be estimated using the time-lag between the arrival of ‘P’ and ‘S’ waves. Reason (R) : The ‘L’ wave cannot start until the ‘P’ wave hits the surface. Codes