Q4. A particle of mass m is moving with speed u in a direction which makes 60° with
respect to x axis. It undergoes elastic collision with the wall. What is the
change in momentum in x and y direction?
Answer : Option AExplaination / Solution: No Explaination.
Q6.A student tunes his guitar by striking a 120 Hertz with a tuning fork, and simultaneously plays the 4th string on his guitar. By keen observation, he hears the amplitude of the combined sound oscillating thrice per second. Which of the following frequencies is the most likely the frequency of the 4th string on his guitar?.
Answer : Option BExplaination / Solution: No Explaination.