किसी आवेशित कण, जिसका 3 × 10−10 Vm−1 तीव्रता के विद्युत क्षेत्र में अपवाह वेग 7.5 × 10−4 ms−1 है, की mV−1 s−1 में गतिशीलता है:

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NEET 2020 Official Paper (Held On: 13 September, 2020)
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  1. 2.5 × 10−6
  2. 2.25 × 10−15
  3. 2.25 × 1015
  4. 2.5 × 106

Answer (Detailed Solution Below)

Option 4 : 2.5 × 106
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व्याख्या:

हम जानते हैं कि अपवाह वेग (vd) और विद्युत क्षेत्र (E) के संदर्भ में, गतिशीलता को इस रूप में परिभाषित किया गया है- 

μ = \(\frac{{{V_d}}}{E}\)    ----- (1)

दिया गया हैं ,

v= 7.5 × 10−4 m s−1 , E = 3 × 10−10 Vm−1

∴ समीकरण (1) से हमारे पास है

μ  \(= \frac{{7.5 × {{10}^{ - 4}}}}{{3 × {{10}^{ - 10}}}}\)

= 2.5 × 10m2 V-1 s-1

इसलिए विकल्प 4) सही विकल्प है।

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