5 Most VSAQ’s of Physical World Chapter in Inter 1st Year Physics (TS/AP)

2 Marks

VSAQ-1 : What is the discovery of C.V. Raman?

The Raman Effect. This phenomenon pertains to the scattering of light by the molecules of a medium. It occurs when these molecules are excited to vibrational energy levels.

VSAQ-2 : What is the contribution of S. Chandra shekhar to physics?

His work primarily focused on the structure and evolution of stars. A notable concept he formulated is the “Chandrasekhar limit,” which represents a critical mass limit for white dwarf stars. This concept has been fundamental in advancing our understanding of stellar evolution and the formation of black holes.

VSAQ-3 : What are the fundamental forces in nature?

Fundamental Forces in Nature: The four fundamental forces are:

  1. Gravitational Force: Governs the attraction between masses.
  2. Electromagnetic Force: Acts between electrically charged particles.
  3. Strong Nuclear Force: The strongest force, it binds particles in the atomic nucleus.
  4. Weak Nuclear Force: Responsible for radioactive decay and nuclear processes.

VSAQ-4 : What is Beta (β) decay ? Which force is a function of it ?

Beta (β) Decay: A type of radioactive decay in nuclear physics characterized by the emission of a beta particle from an atomic nucleus. This beta particle can be a fast, energetic electron or a positron (positively charged electron). During this process, the original nuclide changes into an isobar. An example is the beta decay of a neutron transforming into a proton, accompanied by the emission of an electron and an antineutrino.

VSAQ-5 : What is Physics?

Physics is the scientific study of matter, energy, space, and time, exploring how they interact through various forces. It encompasses a range of fields including mechanics, electromagnetism, and quantum physics, providing a fundamental understanding of both the microscopic and macroscopic universe.