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Photons absorbed in matter are converted to heat. A source emitting n photon/sec of frequency ν is used to convert 1kg of ice at 0°C to water at 0°C. Then, the time T taken for the conversion 

(a) decreases with increasing n, with ν fixed. 

(b) decreases with n fixed, ν increasing 

(c) remains constant with n and ν changing such that nν = constant. 

(d) increases when the product nν increases.

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(a), (b), (c)

(a) decreases with increasing n, with ν fixed. 

(b) decreases with n fixed, ν increasing 

(c) remains constant with n and ν changing such that nν = constant. 

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