2. (a) "Satellite TV receivers, such as those used by ASTRO subscribers, commonly utilize the convex side of the dish for signal reception.\" Comment on this statement using your own words. (2) (b)Estimate how long it would take for a pulse of laser light to reach planet Mars and to bounce back to Earth. (3 ) (c)(i) An object 0 is placed a distance of 2 f in front of L1, a converging lens of focal length f. Discuss the nature of the image formed by L1. (ii) Now, a diverging lens L2, of focal length of -1.5f is placed a distance of 0.5 f behind L1. Predict where the final image of 0 will be formed now. (3) (d)ln the following diagram, an incoming laser beam strikes mirror M1 at an angle of 29. Determine the angle that the outgoing beam will form with the second mirror, M2. Provide a detailed explanation of your reasoning, supported by a hand-sketched diagram. M1 M2 3' '- -. (7) 3. (a) Provide a detailed interpretation of the wave phenomenon depicted in the figures below, using your own words. How does the size of 'a' affect this phenomenon? ( 5) (b)Calculate the speed of the water wave shown below by explaining your reasoning clearly. r 6 m 2m I t= 1.5 s I ( 5) (c) Richard is a young musician in Seremban but unfortunately is broke and unable to afford musical instruments. However, during college days, he had a keen interest in physics and recalls studying about standing waves. Drawing inspiration from his physics course, Richard decides to transform an empty glass bottle without a cap shown below into a musical instrument: F . \\l L4 To tune the bottle correctly and make it produce a fundamental frequency of 460 Hz, Richard needs to determine the precise water level inside the bottle. Assume that the height of the bottle is 28 cm. Determine the required water level inside the bottle, considering a fundamental frequency of 460 Hz, to achieve the desired pitch. Calculate also the frequency of the next higher harmonic that can be produced by the bottle. Explain any assumptions that were made to solve the problem. (10) (Total I Jumiah: 20 )