In a vernier callipers ,one main scale division is x cm and n division of the vernier scale coincide with (n-1) divisions of the main scale.The least count (in cm) of the callipers is ? (IIT JEE 2007)
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In a vernier callipers ,one main scale division is x cm and n division of the vernier scale coincide with (n-1) divisions of the main scale.The least count (in cm) of the callipers is ? (IIT JEE 2007)