जर एखाद्या वस्तूची गतिज उर्जा त्याच्या प्रारंभिक मूल्यापेक्षा 256 पट वाढते, तर नवीन रेखीय संवेग काय असेल?

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RRB ALP CBT I 14 Aug 2018 Shift 1 Official Paper
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  1. प्रारंभिक मूल्याच्या समान
  2. प्रारंभिक मूल्यापेक्षा 8 पट 
  3. प्रारंभिक मूल्यापेक्षा 16 पट 
  4. प्रारंभिक मूल्यापेक्षा 32 पट 

Answer (Detailed Solution Below)

Option 3 : प्रारंभिक मूल्यापेक्षा 16 पट 
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Detailed Solution

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संकल्पना : संवेग आणि ऊर्जा यांच्यातील संबंध खालीलप्रमाणे आहेत:

\(\frac{p^2}{2m}=E\)

जेथे, \(p \ \) कणाचा संवेग आहे.

\(m \ \) हे कणाचे वस्तुमान आहे.

\(E \ \) ही कणाची गतिज ऊर्जा आहे.

स्पष्टीकरण :

वस्तूची गतिज ऊर्जा त्याच्या सुरुवातीच्या मूल्याच्या 256 पट होते.

प्रारंभिक गतिज ऊर्जा संवेग \(p_1 \ \) सह E 1 =E मानू.

संवेग \(p_2 \ \) सह अंतिम गतिज ऊर्जा E 2 =256E आहे.

त्यामुळे,

\(\frac{p_2}{p1} = \frac{(\sqrt{2mE_2})}{( \sqrt{2mE_1})}\\ p_2 = p_1 \times \frac{(\sqrt{2mE_2})}{( \sqrt{2mE_1})} = p_1 \sqrt{\frac{E_2}{E_1}} \\ So, p_2 =p_1\sqrt{ \frac{256E} { E}} = 16 p_1\)

म्हणून, अंतिम रेखीय संवेग त्याच्या प्रारंभिक मूल्याच्या 16 पट आहे.

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