Physics

Space waves travel in a straight line and are used for line of sight (LOS) communication, making them suitable for applications like microwave and satellite communication. Cable waves and antenna waves are not standard terms used to describe LOS communication waves.

Isaac Newton formulated the three laws of motion and the law of universal gravitation, which are fundamental principles in classical physics. This distinguishes him from the other scientists listed, who contributed to different areas of science.

The concept "All motion is relative" was first clearly proposed by Galileo Galilei, who laid the foundation for classical mechanics and relativity of motion. Albert Einstein later developed the theory of relativity, but the original idea is attributed to Galileo.

A Geiger-Muller counter is a device used to detect ionizing radiation, including alpha particles, beta particles, and gamma rays (photons). It does not directly detect protons or neutrons. Since the options list only protons, neutrons, photons, and 'None of the above', and the Geiger-Muller counter detects ionizing particles including photons but also other particles, the best answer among the given options is 'None of the above' because it detects more than just photons. The original answer 'C' (Photons) is partially correct but incomplete, as the counter detects various ionizing radiations, not only photons.

Ernest Rutherford discovered the nucleus of the atom through his gold foil experiment, which showed that atoms have a small, dense, positively charged center called the nucleus.

The theory of the Expanding Universe was first proposed based on observations by Edwin Hubble, who discovered that galaxies are moving away from us, indicating expansion. Einstein and Newton did not propose this theory, and 'Gahleo' appears to be a misspelling or incorrect name.

France produces the highest percentage of its electricity from nuclear power plants, generating a significant portion of its energy from atomic reactors, more than any other country. While the USA has more reactors and total nuclear energy production, France relies more heavily on nuclear energy as a share of its total electricity.

The SI unit of electric charge is the Coulomb, which quantifies the amount of electric charge transported by a current of one ampere in one second.

Vacuum tubes were widely used in early electronics for amplification and switching but have been replaced by transistors, which are smaller, more reliable, and energy-efficient semiconductor devices.

A generator is a device that converts mechanical energy into electrical energy by electromagnetic induction, making option D correct. Motors convert electrical energy into mechanical energy, transformers change voltage levels of electrical energy, and coils are components, not devices that convert energy forms.