Moreover, as x is becoming more negative with time, it shows that v is also – ve (i.e., v < 0). Graph (a) represents two positions at the same time which is not possible. Typical lateral separation between two rain drops is 5 cm. (b) Quantity A is velocity if motion is uniform. The train is moving at a constant velocity of 10 m/s parallel to the direction of motion of the ball. Subject Experts have created these questions after in-depth analysis on the question paper pattern, exam trend and previous year papers. At what distance the car should be from the truck so that it does not bump onto (collide with) the truck. To get fastest exam alerts and government job alerts in India, join our Telegram channel. In S.H.M., acceleration, a – x or a = – kx. Let vb be the speed of each bus. (c) A uniformly moving cricket ball turned back by hitting it with a bat for a very short time-interval. Let initial distance between the two trains be ‘S’ then train B covers the distance (S + 11) = (S + 800) m in time t = 50 s when accelerated with a uniform acceleration a = 1 m/s2. If the ball returns to boy’s hands after a time t, then displacement of ball relative to boy Two towns A and B are connected by regular bus service with a bus leaving in either direction every T minute. A man cycling with a speed of 20 km h-1 in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. (d) During upward motion. Multiple choice questions help to develop understanding of all key points of chapter. 10. So, the graph is in accordance with the quadratic equation. Explain clearly, with examples, the distinction between: On a two-lane road, car A is travelling with a speed of 36 km h-1. 18. This motion is represented by the straight line BC in the graph. Two cars B and C approach car A in opposite directions with a speed of 54 km h-1 each. MCQ Questions for Class 10 Science with Answers PDF Free Download is very important for students who want to score good marks in their CBSE board examination. A monkey climbs up a slippery pole for 3 seconds and subsequently slips for 3 seconds. Home Class11physics-mcq MCQ Questions for Class 11 Physics: Ch 2 Units and Measurements 30 Sept, 2020 MCQ Questions for Class 11 Physics: Ch 2 Units and Measurements. Question 3. So, you can practice different concepts […] Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 71 km h-1 in the same direction, with A ahead of B. because the x-t graph can not show the path of the particle. 4. Thus, the second quantity is greater than the first, 27. (c) As slope of B is greater than that of A, thus B walks faster than A. (c) Choose the x = 0 m and t = 0 s to be the location and time of the ball at its highest point, vertically downward direction to be the positive direction of x-axis, and give the signs of position, velocity and acceleration of the ball during its upward, and downward motion. (a) t = 0 s to 10 s. (b) t = 2 s to 6 s. A drunkard walking in a narrow lane takes 5 steps forward and 3 steps backward, followed again by 5 steps forward and 3 steps backward, and so on. 26. Time=0.05 km/9k h-1=0.0056 h =20 S a < 0 in 2, a=0 in 3. (c) If we consider highest point of ball motion as x = 0, t = 0 and vertically downward direction to be +ve direction of x-axis, then A particle executes the motion described by x(t) = x. Then, the magnitude of the average velocity of the particle over time-interval t is = Magnitude of displacement /Time-interval =0/t =0