A sphere of iron and another of wood, both of same radius are placed on the surface of water. State which of the two will sink? (It is given $ρ_{i r o n} > ρ_{w a t e r}$ , and $ρ_{w o o d} < ρ_{w a t e r}$ )

Sphere of iron will sink.

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Sphere of wood will sink.

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both will sink

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both will not sink

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Solution

The correct option is A Sphere of iron will sink.
Since density of iron is more than that of wood, so weight of iron sphere will be more than upthrust due to water on it. But density of wood is less than that of iron so sphere of wood will float.

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A sphere of iron and another of wood, both of same radius are placed on the surface of water. State which of the two will sink? (It is given ρiron>ρwater, and ρwood<ρwater)

The correct option is A Sphere of iron will sink.Since density of iron is more than that of wood, so weight of iron sphere will be more than upthrust due to water on it. But density of wood is less than that of iron so sphere of wood will float.

A sphere of iron and another of wood, both of same radius are placed on the surface of water. State which of the two will sink? (It is given $ρ_{i r o n} > ρ_{w a t e r}$ , and $ρ_{w o o d} < ρ_{w a t e r}$ )

The correct option is A Sphere of iron will sink.
Since density of iron is more than that of wood, so weight of iron sphere will be more than upthrust due to water on it. But density of wood is less than that of iron so sphere of wood will float.