If a body travels half the distance with speed v1 and remaining half with speed v2, average speed is MCQ with Answer and Explanation

Explanation:
Speed constant, so kinetic energy (½mv²) constant. Velocity, acceleration, momentum change direction.

Explanation:
A rainbow is formed by sunlight interacting with water droplets. As light enters the droplet, it undergoes refraction and dispersion (separating into colors). The light then strikes the back of the droplet and undergoes total internal reflection. Finally, it undergoes a second refraction as it exits, spreading the spectrum out for the observer to see.

Explanation:
T = 1/f = 1/0.5 = 2 s.