4mev गति ऊर्जा के फोटो की चाल की तुलना प्रकाश की चाल से कीजिए?
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दिया है, सीजियम धातु का कार्य-फलन
W = 2.14 eV
= 214 x 1.6 x 10-19 जूल
आपतित प्रकाश की आवृत्ति
v = 6 x 1014 Hz
प्लांक का नियतांक
h = 6.62 x 10-34 जूल सेकण्ड
∴ आपतित फोटॉन की ऊर्जा
hν= 6.62 x 10-34 x 6 x 1014 जूल
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Step-by-step explanation:
Total energy E is defined to be E = γmc2, where m is mass, c is the speed of light,
and v is the velocity of the mass relative to an observer. There are many aspects of the total energy E that we will discuss—among them are how kinetic and potential energies are included in E, and how E is related to relativistic momentum. But first, note that at rest, total energy is not zero. Rather, when v = 0, we have γ = 1, and an object has rest energy.
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