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Mdcat-past-papers - UHS - Physics Quiz

Filters: Board: UHS | Subject: Physics |
221. Heavy nuclei of atoms go through fission so that they can:



222. A low energy neutron has RBE factor of 10. How much energy is absorbed by a man of mass 80kg if the value equivalent dose is 400 rem?



223. It has been observed that Thorium ⁹⁰Th²³⁴ is transformed into protactinium Pa²³⁴ after the emission of –particle:



224. The SI unit of equivalent dose is:



225. The relation between gray and rad is given as:



226. Which of the following is NOT the somatic biological effect of radiation?



227. If electron, proton, neutron, and alpha particle have same velocity, which of them has shortest wavelength?



228. The process of ejection of loosely bound electrons from a certain photo sensitive surface by absorption of photon is called:



229. In photoelectric effect experiment, the stopping potential is:



230. The line spectrum of hydrogen atom contains the spectral lines in the region of:



231. The speed of electron in the first Bohr orbit is:



232. The process of ejection of loosely bound electrons from a certain photo sensitive surface by absorption of photon is called?



233. In Compton effect, a photon of a certain wavelength collides with a stationary electron. The wavelength of the emitted photon is:



234. The Balmer series of hydrogen is important because it:



235. In Compton effect, the incident photon when compared to the scattered photon is of:



236. Which of the following is the longest wavelength of radiation for the Paschen series?



237. If P is the momentum of an object and m is its mass, then its kinetic energy is:



238. The electric field at a point due to two equal and opposite charges is 100 N/C. If the magnitude of each charge is doubled then the electric field at that point becomes:



239. If a plastic sheet of relative permittivity 2.5 is inserted between two-point charges placed in vacuum then the electrostatic force between them



240. After 3 half-lives, the remaining fraction of a radioactive sample is:



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