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Class 12 Physics Practice Test: Wave Nature of Matter
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Class 12 Physics Practice Test: Wave Nature of Matter
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10 Questions

1. The magnitude of which of the following is proportional to the frequency of the wave?
2. What is the de – Broglie wavelength of a ball of mass 150 g moving at a speed of 50 m/s?
3. While comparing the alpha particle, neutron, and beta particle, the alpha particle has the lowest de – Broglie wavelength.
4. What type of nature do electromagnetic waves have?
5. What will be the de – Broglie wavelength when the kinetic energy of the electron increases by 5 times?
6. What is the de – Broglie wavelength associated with an electron, accelerated through a potential difference of 200 volts?
7. The sun gives light at the rate of 1500 W/m2 of area perpendicular to the direction of light. Assume the wavelength of light as 5000Å. Calculate the number of photons/s arriving at 1 m2 area at that part of the earth.
8. While comparing the alpha particle, neutron, and beta particle, the alpha particle has the lowest de – Broglie wavelength.
9. The sun gives light at the rate of 1500 W/m2 of area perpendicular to the direction of light. Assume the wavelength of light as 5000Å. Calculate the number of photons/s arriving at 1 m2 area at that part of the earth.
10. What is the de – Broglie wavelength of a proton accelerated through a potential difference of 2 kV?

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