जल के अन्दर वायु का बुलबुला व्यवहार करता है ?
A. द्विफोकसी लेन्स जैसा
B. अभिसारी लेन्स जैसा
C. अपसारी लेन्स जैसा
D. शंक्वाकार लेन्स जैसा
उत्तर 3
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Naseem ahmad on 10-01-2020
Aakriti
on 07-09-2018
Anup Yadav on 18-08-2018
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Duniya me koun sabse phale koun aaya
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