ETEA MDCAT Past Paper 2021 ETEA MDCAT 16 September ( PART 3 ) 1. Which of the following is the lightest particle? Photon Neutron Electron Proton 2. What is the momentum of a photon with wavelength and Planck constant (h)? P= 2h P= h/λ P=∞ 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 increase The force will remain the same The force will decrease The force will become zero 4. X-ray production is the opposite of: Radioactive decay Compton scattering Electromagnetic radiation 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 2k W 6k W 18k W 6. What is the number of revolutions in 1260 degrees? 1 revolution 3.5 revolutions 4 revolutions 2 revolutions 7. What is the statement of the law of conservation of mechanical energy? Energy can be created or destroyed Total energy is the sum of kinetic energy 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? Transverse wave Longitudinal wave Stationary wave Electromagnetic wave 9. For sterilization, the waves used are: Microwaves Radio waves Sound waves Ultraviolet waves 10. What is a galvanometer used for? Amplifying sound Measuring temperature Measuring pressure Detecting electric current Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11
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