a
air, iron bar, water
b
air, water, iron bar
c
iron, bar water, air
d
water, air, iron bar
e
water, iron bar, air
Explanation
Correct Option
bNo explanation available
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Discussions (1)
Leinad321
4 years ago
Yh sound travels 343m/s in air
1481m/s in water,and
5120m/s in iron bar
So it is air,water,and iron bar
