benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--9053▌ posts · files
MMLU-Pro / 9053 / Under certain conditions, a beam of electrons impinging on a crystal surface…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
Under certain conditions, a beam of electrons impinging on a crystal surface will diffract and a scattering pattern of the beam can be obtained. What is the approximate kinetic energy of the electrons needed in order to see the pattern? (Assume the lattice spacing of the crystal to be 0.4 nm.)
category
physics
options
- 0.01 eV
- 5 eV
- 100 eV
- 0.1 eV
- 500 eV
- 1 eV
- 200 eV
- 50 eV
- 1000 eV
- 10 eV
src
ori_mmlu-college_physics
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Source and history
- upstream_id / Original problem ID
- 9053
- task_id
67d41b13-0830-5649-8a15-ca5e42f86f2f- task_key
default--test--9053- task_revision_id
- 1
- config / split
- default / test
initial import