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The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is
Options
(a) 30.8 / √T Å
(b) 3.08 / √T Å
(c) 0.308 / √T Å
(d) 0.0308 / √T Å
Correct Answer:
30.8 / √T Å
Explanation:
From formula
= h / √ 2mKT
= 6.63 x 10⁻³⁴ / √ (2 x 1.67 x 10⁻²⁷ x 1.38 x 10⁻²³ T) . m
[ By placing value of h, m and k ]
= 30.8 / √T Å
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If force is proportional to square of velocity, then the dimension of proportionality
- The electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ v
- A 0.5 kg ball moving with a speed of 12 m/s strikes a hard wall at an angle
- When a Daniel cell is connected in the secondary circuit of a potentiometer,
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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