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Standard XII

Physics

Centripetal Acceleration

There is form...

Question

There is formation of layer of snow c cm thick on water, when the temperature of air is− $θ^{\circ} C$ (less than freezing point). The thickness of layer increases from x to y in the time t, then the value of t is given by

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Solution

The correct option is A

Since t = $\frac{ρ L}{2 k θ} (x_{2}^{2} - x_{1}^{2})$

$∴ = \frac{ρ L}{2 k θ} (x^{2} - y^{2}) = \frac{ρ L (x + y) (x - y)}{2 K θ}$

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$θ \to$ temperature of surface (as mentioned earlier)

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There is formation of layer of snow c cm thick on water, when the temperature of air is−θ∘ C (less than freezing point). The thickness of layer increases from x to y in the time t, then the value of t is given by

The correct option is A Since t = ρ L2kθ(x22 − x21) ∴ = ρ L2k θ(x2 − y2) = ρL(x + y)(x − y)2Kθ

There is formation of layer of snow c cm thick on water, when the temperature of air is− $θ^{\circ} C$ (less than freezing point). The thickness of layer increases from x to y in the time t, then the value of t is given by

The correct option is A

Since t = $\frac{ρ L}{2 k θ} (x_{2}^{2} - x_{1}^{2})$

$∴ = \frac{ρ L}{2 k θ} (x^{2} - y^{2}) = \frac{ρ L (x + y) (x - y)}{2 K θ}$