ETEA MDCAT Past Paper 2021 ETEA MDCAT 16 September ( PART 3 ) 1. Which of the following is the lightest particle? Neutron Photon Electron Proton 2. What is the momentum of a photon with wavelength and Planck constant (h)? P=∞ P= h/λ P= 2h P= 0 3. The force between two charges in air is F. What will happen to the force if a metal is placed between the two charges? The force will decrease The force will remain the same The force will increase The force will become zero 4. X-ray production is the opposite of: Radioactive decay Electromagnetic radiation Compton scattering Photoelectric effect 5. The mass of a moving car is 1000 kg, its velocity is 20 m/s, and the speed of the car’s engine is 3000 RPM. What is the approximate power of the car? 12k W 6k W 2k W 18k W 6. What is the number of revolutions in 1260 degrees? 4 revolutions 2 revolutions 3.5 revolutions 1 revolution 7. What is the statement of the law of conservation of mechanical energy? Total energy is the sum of kinetic energy Energy can be created or destroyed Kinetic energy plus potential energy equals a constant Work is equal to the change in kinetic energy 8. What type of wave does not carry energy? Longitudinal wave Electromagnetic wave Stationary wave Transverse wave 9. For sterilization, the waves used are: Ultraviolet waves Microwaves Radio waves Sound waves 10. What is a galvanometer used for? Measuring temperature Amplifying sound Measuring pressure Detecting electric current Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11
Mail me my overall obtained marks