Question 3. CBSE and NCERT students can refer to the attached file. MCQ Questions of all subjects for Class 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, and 1 December 13, 2020 by Kishen Students who are looking for Multiple Choice Type Questions (MCQs) for all subjects can download from here. Practice is the only key for success […] ... Download Printable Worksheets, test papers for Class 11 Physics with questions answers for all topics and chapters as per CBSE, NCERT, KVS syllabus. Answer:  (a) The railway carriage moving without jerks between two stations, so the distance (d) Rate of change of momentum is force. (b) Speed of the child running opposite to the direction of motion of the belt? What are the accelerations at points A, B, C and D? If O is regarded as the origin for both time and distance, then at t = 9.00 am, x = 0 (iii) 0 to 40 min? Answer: Greater in 3, least in 2; v > 0 in 1 and 2, v < 0 in interval 3. A ball is bouncing elastically with a speed 1 m/s between walls of a railway compartment of size 10 m in a direction perpendicular to walls. Multiple Choice Questions (MCQ) for CBSE Class 11-science Physics chapters on Topperlearning. The instantaneous speed is always equal to the magnitude of instantaneous velocity. During an elastic collision, the total K? If the lift starts moving up with a uniform speed of 5 m s-1 and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands? In which of the following examples of motion, can the body be considered approximately a point object. (iii) At t = -1.2 s, x < 0, but here on increasing the time t, value of x becomes less negative. 17. Subject Experts have created these questions after in-depth analysis on the question paper pattern, exam trend and previous year papers. (g = 10m/s. Again, the second quantity (average speed) is greater than the first (magnitude of average velocity). A woman starts from her home at 9.00 am, walks with a speed of 5 km h-1 on a straight road up to her office 2.5 km away, stays at the office up to 5.00 pm, and returns home by an auto with a speed of 2.5 km h-1. What minimum acceleration of car B is required to avoid an accident? What must be the value of constant speed? Answer: (a) The direction of acceleration during the upward motion of the ball is vertically downward. After a long time of release, it is observed to fall with constant speed. You would not like to tell the tired man on his return home that his average speed was zero!] The sign of v and a in the three intervals are: Out of the following pairs, which one does not have identical dimensions ? No such distinction is necessary when we consider instantaneous speed and magnitude of velocity. (Take acceleration in the backward direction as positive). 1. A man is standing on top of a building 100 m high. If Vj and v0 represent the velocities of jet and observer respectively, then vj – vo = 500 km h-1 (a) the particle moving along positive x-direction comes to rest periodically and moves forward. Question 3. Human response time is 0.5s. If the ball returns to boy’s hands after a time t, then displacement of ball relative to boy Choose correct alternatives from below. (d) Average velocity for the motion between A and D is positive. Thus in 8 s he covers only 2 m, as shown in the graph he would fall in the pit in 37 s. Figure shows the x-t plot of one-dimensional motion of a particle. carefully and state, with reasons, which of these cannot possibly represent one-dimensional motion of a particle. A motor car moving at a speed of 72km/h can not come to a stop in less than 3.0 s while for a truck this time interval is 5.0 s. On a higway the car is behind the truck both moving at 72km/h. Here we have covered Important Questions on Motion in a Straight Line for Class 11 Physics subject.. Physics Important Questions Class 11 are given below.. 24. and at t = 9.30 am, x = 2.5 km Verify that the graph shown in Fig. Among the four graphs (Fig. Along positive-axis, one division equals 0.5 km. The position-time (x -1) graphs for two children A and B returning from their school O to their homes P and Q respectively are shown in Fig. At a certain instant, when the distance AB is equal to AC, both being 1 km, B decides to overtake A before C does. OA is the x-t graph of the motion when the woman walks from her home to office. 23. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. A uniformly moving cricket ball is turned back by hitting it with a bat for a very short time interval. relative to the jet plane. 11. Question 3. (d) the acceleration of ball is the same as from the train. Answer: (a) Suppose a particle goes from point A to B along a straight path and returns to A along the same path. NCERT Solutions for Class 11 Physics Chapter 3 Motion in a Straight Line are part of Class 11 Physics NCERT Solutions. because the x-t graph can not show the path of the particle. At what distance the car should be from the truck so that it does not bump onto (collide with) the truck. (d) To what height does the ball rise and after how long does the ball return to the player’s hands? In S.H.M., acceleration, a – x or a = – kx. Contains solved exercises, review questions, MCQs, important board questions and chapter overview. In graph (b) opposite motion is visible at the same time. Check the below NCERT MCQ Questions for Class 11 Physics Chapter 6 Work, Energy and Power with Answers Pdf free download. What is the period T of the bus service and with what speed (assumed constant) do the buses ply on the road? The belt moves with a speed of 4 km h-1 . At each collision with the floor, the ball loses one tenth of its speed. (b) Magnitude of average velocity over an interval of time, and the average speed over the same interval. How much time does the ball take to return to his hands? As the Syllabus of Class 11 Physics is vast you can cover all the concepts by solving the Multiple Choice Quiz Questions for 11th Class. These Class 11 Physics MCQ Objective Questions with Solutions PDF cover all topics involved in the latest CBSE Class 11 Physics Syllabus. Prepare online for FSc part 1, 11th class Physics Chapter 3 online mcq test with answers pdf, FSc Part 1 Book 1 Physics Chapter 3 Motion and Force In which interval is the average speed greatest, and in which is it the least? MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. (a) Einstein (b) Henri Becquerel (c) Newton (d) C.V.Raman (b) Henri Becquerel. For an observe a stationary platform outside, what is the Class 11 Physics – Important Question answer for students preparing for XI Board … Physics Multiple Choice Questions (MCQs) on the topic of a Conservative force. This motion is represented by the straight line BC in the graph. Relative position of second stone w.r.t. 25. It rebounds from a wall with reduced speed and moves to the opposite wall which stops it. The speed-time graph of a particle moving along a fixed direction is shown in Fig. (c) A spinning cricket ball that turns sharply on hitting the ground. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. 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 muzzle speed of the bullet is 150 ms-1 , with what speed does the bullet hit the thief s car? (a) with zero speed at an instant may have non-zero acceleration at that instant. Benefits of Solving CBSE Class 11 Physics Chapter 3 28. (a) Angular momentum and Planck's constant Answer: For first stone, We have provided Work, Energy and Power Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. 16. (b) False. 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. The average speed is greatest in interval 3 (peak D is at maximum on speed axis). Answer: (c),(d),(f). (b) At the highest point, velocity of ball is zero but acceleration (g = 9.8 ms-2) in vertically downward direction. Estimate its momentum when it hits ground. 3.2 describes the motion of a particle in a straight line. Note: In both the above cases, the two quantities are equal if the particle moves from one point to another along a straight path in the same direction only. A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 m s-1. Question 3.14. We have provided Gravitation Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. When the first stone hits the ground, x1 (t) = 0 Answer:  (a) True. 3.1), there is only one graph for which average velocity over the time intervel (0, T ) can vanish for a suitably chosen T. Which one is it? Question 3. (e) At the point of intersection (i.e., X), B overtakes A on the roads once. (a) A railway carriage moving without jerks between two stations. If his speed is 9 m/s, the (horizontal) distance between the two buildings is 10 m and the height difference is 9 m, will he be able to land on the next building ? (b) Obtain the relation between acceleration and displacement and plot it. Answer: The acceleration is greatest in magnitude in interval 2 as the change in speed in the same time is maximum in this interval. (ii) At t = 1.2 s, x > 0, v > 0 and a < 0. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 11.. The driver of B decides to overtake A and accelerates by 1 ms-1. Question from very important topics are covered by NCERT Exemplar Class 11. Choose the correct entries in the brackets below: Calculate the velocity with which the balls were thrown and the exact time interval between their throw. (c) Speed of child w.r.t . It repeats this cycle till it reaches the height of 20 m. (a) At what time is its velocity maximum? The velocity-time graph of a particle in one-dimensional motion is shown below. (d) A tumbling beaker that has slipped off the edge of table. Answer: Speed of child with respect to belt = 9 km h-1 Speed of belt = 4 km h-1 (take g = 10 m/s. Class 11 Physics notes according to FBISE syllabus. Refer to the graphs in Fig 3.1. Now that you are provided all the necessary information regarding CBSE Class 11 Physics Worksheet and we hope this detailed article is helpful. -5t2 + 30t + 200 = 0 The wave nature of electrons is used in which of the following devices? Again a = – kx will be positive (i.e., a > 0). (a) Where does the particle start and with what velocity? When this stone hits the ground, x1(t) = 0 .-. 18 minute i.e.18/20 h. Question 3. Is it correct to say from the graph that the particle moves in a straight line for t < 0 and on a parabolic path for t > 0? Question 3. 22. A lift is coming from 8th floor and is just about to reach 4th floor. Path length never decreases. (b) Quantity A is velocity if motion is uniform. NCERT Exemplar Class 11 Physics is very important resource for students preparing for XI Board Examination. Cliff 200 m high with initial speeds of 15 ms-1 and 30 ms-1 between and. 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