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एक से अधिक उत्तर प्रकार के प्रश्न

A girl goes on morning walk with her father. She starts from a point P and reaches to point Q in one-fourth of an hour and returns to her starting point in 30 minutes. If the separation between point P and Q is 3 km, then choose the correct statement(s) regarding her entire journey.

एक लड़की अपने पिता के साथ प्रातःकाल के भ्रमण पर जाती है। वह एक बिंदु P से गति करना प्रारम्भ करती है तथा 15 मिनट में बिंदु Q पर पहुँचती है तथा अपने प्रारम्भिक बिंदु पर 30 मिनट में वापस लौटती है। यदि बिंदु P तथा Q के मध्य दूरी 3 km है, तब उसकी सम्पूर्ण यात्रा के सन्दर्भ में सही कथन/कथनों का चयन कीजिए।

A
Her motion is uniform

उसकी गति एकसमान है
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B
Her motion is non-uniform

उसकी गति अ-समान है
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C
Her average speed is 8 km/h

उसकी औसत चाल 8 km/h है
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D
Her average speed is 209m/s

उसकी औसत चाल 209m/s है
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Solution

The correct option is D Her average speed is 209m/s

उसकी औसत चाल 209m/s है

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