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प्रश्न
A liquid rises to a height of 2.8 cm in a glass capillary 'A'. Another glass capillary 'B' having a diameter of 80% of capillary 'A' is immersed in the same liquid. The rise of liquid in capillary 'B' is ______
पर्याय
1.4 cm
1.8 cm
3.5 cm
2.2 cm
MCQ
रिकाम्या जागा भरा
उत्तर
A liquid rises to a height of 2.8 cm in a glass capillary 'A'. Another glass capillary 'B' having a diameter of 80% of capillary 'A' is immersed in the same liquid. The rise of liquid in capillary 'B' is 3.5 cm.
Explanation:
`"h"_1"r"_1 = "h"_2"r"_2`
∴ `"h"_2 = ("h"_1"r"_1)/"r"_2 = (2.8 xx "r")/(0.8"r")` = 3.5 cm
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