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JEE Mains · Physics · STD 11 - 1. units,dimensions and measurement

यदि इलेक्ट्रॉन-आवेश \(e\), इलेक्ट्रॉन-द्रव्यमान \(m\), निर्वात् में प्रकाश के वेग \(c\) तथा प्लाँक स्थिरांक \(h\), को मूल राशियाँ मान लिया जाय तो, निर्वात् की चुम्बकशीलता \(\mu_{0}\) का मात्रक होगा :

  1. A \(\left( {\frac{h}{{m{e^2}}}} \right)\)
  2. B \(\left( {\frac{{hc}}{{m{e^2}}}} \right)\)
  3. C \(\left( {\frac{h}{{c{e^2}}}} \right)\)
  4. D \(\left( {\frac{{m{c^2}}}{{h{e^2}}}} \right)\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\left( {\frac{h}{{c{e^2}}}} \right)\)

Step-by-step Solution

Detailed explanation

Let \(\mu_{0}\) related with \(e, m, c\) and \(h\) as follows. \(\mu_{0}=k e^{a} m^{b} c^{c} h^{d}\) \({\left[M L T^{-2} A^{-2}\right]=[A T]^{a}[M]^{b}\left[L T^{-1}\right]^{c}\left[M L^{2} T^{-1}\right]^{d}}\) \(=\left[M^{b+d} L^{c+2 d} T^{a-c-d} A^{a}\right]\) On comparingboth…
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