Answer: In an elastic collision, kinetic energy is conserved, while in an inelastic collision, kinetic energy is not conserved.
2. What is the formula for power?
Answer: The formula for power (P) is P = W/t, where W is the work done and t is the time taken.
3. What is the difference between a wave and a particle?
Answer: A wave is a disturbance that propagates through space, while a particle is a discrete unit of matter.
4. What is the formula for the frequency of a wave?
Answer: The formula for the frequency (f) of a wave is f = 1/T, where T is the period.
5. What is the difference between a magnetic dipole and an electric dipole?
Answer: A magnetic dipole is a pair of equal and opposite magnetic poles separated by a small distance, while an electric dipole is a pair of equal and opposite electric charges separated by a small distance.
6. What is the formula for the speed of light in a vacuum?
Answer: The speed of light in a vacuum is constant and is approximately 3 x 10^8 m/s.
7. What is the difference between nuclear fission and nuclear fusion?
Answer: Nuclear fission is the splitting of a heavy nucleus into two smaller nuclei with the release of energy, while nuclear fusion is the combining of two light nuclei into a heavier nucleus with the release of energy.
8. What is the formula for the refractive index of a material?
Answer: The formula for the refractive index (n) of a material is n = c/v, where c is the speed of light in a vacuum and v is the speed of light in the material.
9. What is the difference between a conductor and a superconductor?
Answer: A superconductor is a material that has zero electrical resistance below a certain critical temperature, while a conductor has a finite electrical resistance.
10. What is the formula for the period of a wave?
Answer: The formula for the period (T) of a wave is T = 1/f, where f is the frequency.
11. What is the difference between a concave and convex lens?
Answer: A concave lens diverges light, while a convex lens converges light.
12. What is the formula for Coulomb's law?
Answer: The formula for Coulomb's law is F = k(q1q2)/r^2, where F is the force, k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between the charges.
13. What is the difference between conductors and insulators?
Answer: Conductors allow electricity to flow through them easily, while insulators do not.
14. What is the formula for the acceleration due to gravity?
Answer: The formula for the acceleration due to gravity (g) is g = Gm/r^2, where G is the gravitational constant, m is the mass of the object, and r is the distance between the object and the center of the Earth.
15. What is the difference between a scalar and a vector quantity?
Answer: A scalar quantity has only magnitude, while a vector quantity has both magnitude and direction.
16. What is the formula for the efficiency of a machine?
Answer: The formula for the efficiency (η) of a machine is η = (Wout/Win) x 100%, where Wout is the output work and Win is the input work.
17. What is the difference between a parallel and series circuit?
Answer: In a parallel circuit, the components are connected in parallel and each has its own branch, while in a series circuit, the components are connected end to end in a single loop.
18. What is the formula for Boyle's law?
Answer: The formula for Boyle's law is P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.
19. What is the difference between longitudinal and transverse waves?
Answer: In a longitudinal wave, the oscillations are parallel to the direction of wave propagation, while in a transverse wave, the oscillations are perpendicular to the direction of wave propagation.
20. What is the formula for the Doppler effect?
Answer: The formula for the Doppler effect is Δf/f = v/c, where Δf is the change in frequency, f is the original frequency, v is the relative velocity between the source and observer, and c is the speed of sound or light.
13. What is the difference between conductors and insulators?
Answer: Conductors allow electricity to flow through them easily, while insulators do not.
14. What is the formula for the acceleration due to gravity?
Answer: The formula for the acceleration due to gravity (g) is g = Gm/r^2, where G is the gravitational constant, m is the mass of the object, and r is the distance between the object and the center of the Earth.
15. What is the difference between a scalar and a vector quantity?
Answer: A scalar quantity has only magnitude, while a vector quantity has both magnitude and direction.
16. What is the formula for the efficiency of a machine?
Answer: The formula for the efficiency (η) of a machine is η = (Wout/Win) x 100%, where Wout is the output work and Win is the input work.
17. What is the difference between a parallel and series circuit?
Answer: In a parallel circuit, the components are connected in parallel and each has its own branch, while in a series circuit, the components are connected end to end in a single loop.
18. What is the formula for Boyle's law?
Answer: The formula for Boyle's law is P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.
19. What is the difference between longitudinal and transverse waves?
Answer: In a longitudinal wave, the oscillations are parallel to the direction of wave propagation, while in a transverse wave, the oscillations are perpendicular to the direction of wave propagation.
20. What is the formula for the Doppler effect?
Answer: The formula for the Doppler effect is Δf/f = v/c, where Δf is the change in frequency, f is the original frequency, v is the relative velocity between the source and observer, and c is the speed of sound or light.
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