500 ग्रॅम वस्तुमानाच्या एका धातूच्या ठोकळ्याची विशिष्ट उष्णता क्षमता ( Jg-1K-1 मध्ये) शोधा, ज्याचे तापमान 80°C ने वाढते तेव्हा ते 10 किलोज्यूल उष्णता शोषून घेते?

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RRB ALP Fitter 23 Jan 2019 Official Paper (Shift 1)
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  1. 0.4
  2. 0.16
  3. 1.56
  4. 0.25

Answer (Detailed Solution Below)

Option 4 : 0.25
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Detailed Solution

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संकल्पना:

विशिष्ट उष्णता क्षमता:

  • त्याचे तापमान एका अंशाने बदलण्यासाठी आवश्यक उष्णतेचे प्रमाण म्हणून त्याची व्याख्या केली जाऊ शकते.
  • गणितानुसार, उष्णता आवश्यक आहे, Q = mcΔT,
  • जेथे m = वस्तुमान, c = विशिष्ट उष्णता क्षमता, ΔT = तापमानातील फरक
  • हे Jg-1K-1 मध्ये मोजले जाऊ शकते.

गणना:

दिल्याप्रमाणे: वस्तुमान, m = 500 ग्रॅम, तापमानातील फरक, ΔT = 80ºC, उष्णता, Q = 10 kJ

विशिष्ट उष्णता क्षमता,

म्हणून, विशिष्ट उष्णता क्षमता 0.25 Jg-1K-1 आहे

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