Consider the following events and arrange them in correct chronological order starting from the earliest to the last activity : (I) Discovery of pi meson (II) Discovery of Neutron (III) Discovery of Electron (IV) Discovery of Proton Select the correct answer using the code given below:

Which of the following pairs of physical phenomenon and the discoverer is/are correctly matched ? 1. James Chadwick : Photoelectric effect 2. Albert Einstein : Neutron 3. Marie Curie : Radium Select…

Which of the following forces is/are fundamental in nature ? 1. Gravitational force 2. Electromagnetic forces 3. Strong and weak nuclear forces Select the correct answer using the code given below :

Consider the interaction forces between two protons separated by a distance of the order of 1 femtometer (10⁻¹⁵ m). The correct order of the strengths of the electromagnetic, gravitational and nuclea…

Which of the following statements about 'fission' is correct ? 1. It is related with the creation of new individuals by means of cell division in unicellular organism. 2. It is related with the trans…

Which of the following pairs is NOT correctly matched? (Quantity – S. I. Unit)