[ DOST 9 ] DOST SCHOLARSHIP EXAM REVIEWER IX

DOST Scholarship Reviewer

DOST Scholarship Reviewer - Physics

Instructions:

Please answer each question to the best of your ability. Each question is multiple choice, and only one answer per question is correct. Select the most appropriate answer from the options provided. There are 40 questions in total.

When you have completed all questions, click the "Submit" button at the bottom of the page to see your score. Good luck!

1. What is the Heisenberg Uncertainty Principle fundamentally concerned with?




2. Which of these particles is considered a force carrier in quantum field theory?




3. In Einstein's theory of General Relativity, what causes gravity?




4. What phenomenon is responsible for the stability of atomic nuclei?




5. Which principle explains why an airplane wing generates lift?




6. The Higgs boson is responsible for imparting which property to particles?




7. What property is conserved in both elastic and inelastic collisions?




8. What kind of wave does light behave as, according to quantum mechanics?




9. Which scientist is credited with the discovery of radioactivity?




10. In the Standard Model of particle physics, which particle mediates the weak force?




11. What is the main difference between conductors and insulators?




12. Who is credited with formulating the laws of planetary motion?




13. Which theory predicts that time dilates as one approaches the speed of light?




14. Which of the following is an example of a scalar quantity?




15. A 5 kg object is moving at a velocity of 10 m/s. What is its kinetic energy?




16. A car accelerates from rest to a speed of 20 m/s in 5 seconds. What is the car's acceleration?




17. A force of 30 N is applied to move a 3 kg box across a surface for a distance of 2 m. What is the work done on the box?




18. A 2 kg mass is dropped from a height of 20 m. What is the potential energy at the top?




19. A 3.5 kg ball is thrown upwards with a speed of 15 m/s. How high will it rise? (Use g = 9.81 m/s²)




20. A circuit has a resistance of 10 ohms and a current of 2 A. What is the voltage?




21. A capacitor of capacitance 2 µF is charged to a voltage of 12 V. What is the charge stored in the capacitor?




22. An object is moving in a circle of radius 5 m at a speed of 10 m/s. What is the centripetal acceleration?




23. A 12 V battery supplies a current of 0.5 A for 2 hours. What is the total energy consumed?




24. A wave has a frequency of 50 Hz and a wavelength of 2 m. What is the speed of the wave?




25. A gas is compressed from a volume of 5 L to 2 L at a constant temperature of 300 K. If the initial pressure is 2 atm, what is the final pressure? (Use Boyle's Law)




26. A 0.5 kg block is placed on an incline of 30 degrees. What is the force acting parallel to the incline due to gravity? (g = 9.81 m/s²)




27. A spring has a spring constant of 200 N/m. How much potential energy is stored in the spring when it is compressed by 0.1 m?




28. A 10 kg object is moving with a velocity of 5 m/s. What is its momentum?




29. A block of mass 4 kg is pushed with a force of 20 N across a frictionless surface. What is its acceleration?




30. A 20 kg object is lifted to a height of 10 m. What is the work done against gravity? (g = 9.81 m/s²)




31. A photon has a wavelength of 500 nm. What is its energy?




32. An object with a mass of 8 kg is traveling at a velocity of 15 m/s. What is its momentum?




33. A 6 kg object is thrown vertically upwards with a speed of 20 m/s. What will be its maximum height? (g = 9.81 m/s²)




34. A wave travels a distance of 100 m in 2 seconds. What is its speed?




35. A metal rod with a length of 1 m expands by 0.5 mm when heated. If the original temperature is 20°C, what is the change in temperature? (Assuming linear expansion coefficient is 0.00001 /°C)




36. An ideal gas has a volume of 0.5 m³ at a pressure of 100 kPa. If the volume is doubled at constant temperature, what is the new pressure?




37. A car of mass 1000 kg traveling at 20 m/s hits a stationary car of mass 800 kg. If the collision is perfectly inelastic, what is their final velocity?




38. A 50 g mass is hung from a spring with a spring constant of 300 N/m. How far does the spring stretch?




39. A current of 2 A flows through a 12 Ω resistor. What is the power dissipated?




40. A 1000 kg car is traveling at 25 m/s. What is its total mechanical energy?




Result

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