Q11. What is the unit of power?
Correct: Watt
Power is measured in Watt.
Q12. Which law relates voltage, current, and resistance?
Correct: Ohm's law
Ohm's law relates V, I, and R.
Q13. What is the unit of pressure?
Correct: Pascal
Pressure is measured in Pascal.
Q14. Which phenomenon causes a rainbow?
Correct: Dispersion
Rainbow is formed due to dispersion of light.
Q15. What is the unit of electric resistance?
Correct: Ohm
Resistance is measured in Ohm.
Q16. Which energy is associated with motion?
Correct: Kinetic
Kinetic energy is energy of motion.
Q17. What is the center of an atom called?
Correct: Nucleus
The center of an atom is the nucleus.
Q18. Which mirror is used in vehicles as rear-view mirror?
Correct: Convex
Convex mirrors provide a wider field of view.
Q19. What is the unit of work?
Correct: Joule
Work is measured in Joule.
Q20. Which device converts mechanical energy into electrical energy?
Correct: Generator
A generator converts mechanical energy into electrical energy.
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