Bagrut (Secondary School Matriculation) · Physics
Waves, optics and nuclear physics
8 practice questions, each with the answer and an explanation.
Practise Waves, optics and nuclear physics now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 8 questions
- A ray in air strikes a transparent material at 60 degrees to the normal and is refracted at 30 degrees. What is the refractive index of the material?
- A radioactive sample contains 2000 nuclei and has a half-life of 8 days. How many undecayed nuclei remain after 32 days?
- A ray in air strikes a transparent material at 45 degrees to the normal and is refracted at 30 degrees. What is the refractive index of the material?
- A wave has frequency 5 Hz and wavelength 0.1 m. What is its speed?
- A radioactive sample contains 1200 nuclei and has a half-life of 12 days. How many undecayed nuclei remain after 48 days?
- A wave has frequency 440 Hz and wavelength 2 m. What is its speed?
- A radioactive sample contains 1600 nuclei and has a half-life of 8 days. How many undecayed nuclei remain after 24 days?
- A wave has frequency 5 Hz and wavelength 2 m. What is its speed?
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