The de-Broglie wavelength of a neutron at 27^0C is ' _0'. What will be its wavelength at 927^0C ?

MHT CET 2025 Physics question

The de-Broglie wavelength of a neutron at 27C is ''. What will be its wavelength at 927C ?

Answer: (C)

For a thermal neutron the kinetic energy is , so and . Temperatures in kelvin: K and K. So

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Question ID VK-102026