Question 2 of 239
Nuclear force between two nucleons is:
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Answer: (A) Short range and charge independent
Strong nuclear force operates within short range () and acts equally between and .
Atoms & Nuclei
NEET level, single correct, medium
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More Physics practice
- Atoms & NucleiThe energy of an electron in the ground state of hydrogen atom is . In the first excited state (), its energy is:
- Atoms & NucleiGiven below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Emission of electrons in photoelectric effect can be suppressed by applying a sufficiently negative electron potential to the photoemissive substance.
Reason (R) : A negative electric potential, which stops the emission of electrons from the surface of a photoemissive substance, varies linearly with frequency of incident radiation.
In the light of the above statements, choose the most appropriate answer from the options given below : - Atoms & NucleiThe mass defect in a particular reaction is . The amount of energy liberated is , where _____. (speed of light )
- Atoms & NucleiGiven below are two statements:
Statement I: Most of the mass of the atom and all its positive charge are concentrated in a tiny nucleus and the electrons revolve around it, is Rutherford's model.
Statement II: An atom is a spherical cloud of positive charges with electrons embedded in it, is a special case of Rutherford's model.
In the light of the above statements, choose the most appropriate from the options given below. - Atoms & NucleiIn Rutherford's alpha-particle scattering experiment, only a few alpha particles rebound back because
A. The size of gold nucleus is very small as compared to the size of gold atom.
B. Alpha particle and gold nucleus have equal charge.
C. The impact parameter is minimum for a few alpha particles.
D. A few alpha particles have very high kinetic energy.
E. Only a few alpha particles undergo head-on collision with the nuclei.
Choose the correct answer from the options given below: - Atoms & NucleiIf an alpha particle with energy 7.7 MeV is bombarded on a thin gold foil, the closest distance from nucleus it can reach is m. (Atomic number of gold and in SI units)
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