MCQ Quiz with Timer, Explanations, and Time Taken         Time remaining: 02:00:00                                 Question 1: Which one among the following has the largest energy per photon?                      A) X-ray             B) Ultra-violet ray             C) Visible-ray             D) Infra-red ray                                                  Question 2: In Sun-Earth system, the distance between Lagrange points L2 and L3 is about                      A) 15 lakh kilometers             B) 30 lakh kilometers             C) 16 crore kilometers             D) 32 crore kilometers                                                  Question 3: A canon shoots a ball upwards with an initial speed of 100 m/s. The total time of flight of the ball is 20 s before it hits the ground. The ball loses 70% of its speed after hitting the ground. Which among the following is the correct height that the ball will bounce up after its first bounce? (g = 10 m/s²)                      A) ...