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Which increasing risk results when the refrigeration cycle in a cryocooler operates outside optimal frequency?

A)Thermal losses increase disproportionately
B)Compressor efficiency reaches unity
C)Cryostat temperature stabilizes rapidly
D)Acoustic impedance is nearly zero

💡 Explanation

Inefficient frequency operation leads to increased irreversibilities; therefore, thermal losses grow when the frequency deviates, because irreversible expansion overcomes refrigeration gain, rather than efficient cooling at targeted rates.

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