CBSE Class 11 (Science) Motion in a Plane — practice questions
96 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Motion in a Plane in the app →As per your syllabus, the key feature that distinguishes a vector from a scalar is which?As per your syllabus, two vectors A and B are EQUAL if they have which property?As per your syllabus, the sum of a vector A and its negative -A produces which result?As per your syllabus, eqn 3.1, vector addition obeys which property by symmetry?As per your syllabus, rain falls vertically at 35 m/s and wind blows horizontally at 12 m/s. The resultant speAs per your syllabus, the boy should hold his umbrella at approximately which angle to the vertical?As per your syllabus, displacement (position change) is which kind of quantity?As per your syllabus, examples of SCALAR quantities include which set?As per your syllabus, vector subtraction A - B is defined as which operation?As per your syllabus, a UNIT vector has which magnitude and which dimension?As per your syllabus, eqn 3.13, the x-component of a vector A of magnitude A making angle θ with the x-axis isAs per your syllabus, eqn 3.14, the magnitude of a vector A = A_x î + A_y ĵ is which expression?As per your syllabus, eqn 3.15, the angle θ that a vector A makes with the x-axis (given components A_x and A_As per your syllabus, the unit vectors along the x, y, z axes are denoted by which trio?As per your syllabus, a vector in xy-plane can be written in component form as which expression?As per your syllabus, vector addition by the ANALYTICAL method adds vectors by adding which?As per your syllabus, the magnitude of the resultant of two vectors A and B at angle θ is given by which expreAs per your syllabus, components of vector A along x and y axes are scalars whose SIGN depends on which featurAs per your syllabus, if |A| = |B| = a and they make 60° between them, the magnitude of A + B is which?As per your syllabus, if |A| = |B| = a and they make 90° between them, the magnitude of A + B is which?As per your syllabus, eqn 3.39, the trajectory equation of a projectile y = (tan θ₀)x − [g/(2v₀²cos²θ₀)]x² desAs per your syllabus, eqn 3.40a, the time t_m to reach the maximum height of a projectile is which?As per your syllabus, eqn 3.40b, the time of flight T_f of a projectile (returning to launch level) is which?As per your syllabus, eqn 3.41, the maximum height h_m of a projectile is which expression?As per your syllabus, eqn 3.42a, the horizontal RANGE R of a projectile (same launch + landing height) is whicAs per your syllabus, eqn 3.42b, the projection angle θ₀ that gives MAXIMUM range (for fixed v₀) is which valuAs per your syllabus, launch angles (45° + α) and (45° − α) give which property of their ranges?As per your syllabus, a ball thrown at 28 m/s at 30° above horizontal has maximum height of approximately whicAs per your syllabus, the time of flight for the same 28 m/s at 30° projectile is approximately which?As per your syllabus, the horizontal range for the 28 m/s at 30° projectile is approximately which?As per your syllabus, the horizontal and vertical velocities at the moment of impact depend on which factors?As per your syllabus, in UNIFORM circular motion, what stays constant and what changes?As per your syllabus, eqn 3.43, the magnitude of the CENTRIPETAL acceleration in UCM is which?As per your syllabus, the direction of the centripetal acceleration vector is always which?As per your syllabus, the relation between linear speed v, angular speed ω, and radius R in UCM is which?As per your syllabus, eqn 3.46, the centripetal acceleration expressed via angular speed ω is which?As per your syllabus, eqn 3.47, the relation between angular speed ω, period T, and frequency ν is which?As per your syllabus, eqn 3.48, the centripetal acceleration expressed via FREQUENCY ν is which?As per your syllabus, the centripetal acceleration vector in UCM is which kind of vector?As per your syllabus, the direction of the VELOCITY vector at any point on the circular path in UCM is which?As per your syllabus, an insect on a 12 cm circular groove completes 7 revolutions in 100 s. Its angular speedAs per your syllabus, the centripetal acceleration of a particle in UCM depends linearly on which of these quaAs per your syllabus, historical note, the analysis of centripetal acceleration was first published in 1673 byA ceiling fan rotates at $120$ rpm. Its angular speed is approximately:Force has both size and direction and adds by the triangle law. It is a:Which set contains only vector quantities?You walk from P to Q by a winding road. Your displacement is:Compared with the path length, the magnitude of displacement is:Two vectors have the same magnitude and the same direction. They are:You slide a vector parallel to itself. The vector:Multiplying vector A by 2 gives a vector that is:Placing the tail of B at the head of A and joining tail of A to head of B is the:Adding A and -A gives a vector of zero magnitude called the:The direction of a null vector:A kicked football flying through the air is an example of a:A projectile's horizontal motion has:Who first said the horizontal and vertical parts of projectile motion are independent?While a ball is in flight, ignoring air, its acceleration points:Time of flight is twice the time to reach maximum height because the path is:The horizontal distance from launch to where the projectile lands back at the same level is the:For a fixed launch speed, range is greatest at a launch angle of:A car goes round a roundabout at a steady 20 km/h. Its motion is:The acceleration in uniform circular motion always points:Newton named the centre-directed acceleration:Centripetal acceleration has constant magnitude but is not a constant vector because its:The time for one full revolution is the:Ignoring air resistance, a ball hit at an angle follows which path?During projectile motion, which velocity component stays unchanged throughout the flight?A stone leaves at 30 m/s, 30 degrees above level. With g = 10, time to the top?A javelin is thrown at 50 m/s with sin(angle) = 0.6. Using g = 10, how long is it airborne?A football takes 2 s to reach its peak and lands at the launch level. What is its total flight time?At what projection angle is the horizontal range of a projectile greatest for a given speed?A shell fired at 30 degrees has the same range as one fired at the same speed at which other angle?A ball is thrown at 20 m/s for maximum range. With g = 10, how far does it go?A ball is launched at 20 m/s at 30 degrees. Taking g = 10 m/s^2, what is the greatest height reached?In uniform circular motion, the velocity of the object at any point points along which direction?The acceleration of a body moving uniformly on a circle is directed in which way?Which quantity remains constant for a particle in uniform circular motion?A wheel turns at a frequency of 5 Hz. What is its angular speed in rad/s?A stone on a string of length 0.5 m circles twice every second. What is its linear speed?A cyclist rounds a bend of radius 5 m at 10 m/s. What is the centripetal acceleration?A particle moves on a circle of radius 2 m at 3 rad/s. What is its centripetal acceleration?A fan blade has an angular speed of pi rad/s. What is its time period of revolution?The statement A + B = B + A shows that vector addition obeys which law?The relation (A + B) + C = A + (B + C) expresses which property of vector addition?What do we get when a vector A is added to its negative, -A?Subtracting vector B from vector A is defined as adding A to which vector?Which of these has magnitude one and carries neither dimension nor unit?A force of 10 N acts at 60 degrees to the x-axis. What is its x-component?What is the magnitude of the vector 3i + 4j?Two perpendicular forces of 6 N and 8 N act on a body. What is the magnitude of the resultant?Two vectors of magnitude 5 each are inclined at 120 degrees. What is the magnitude of their resultant?What happens to the direction of a vector when it is multiplied by a negative real number?A particle shifts from the point (1, 2) to the point (4, 6) in a plane. What is the magnitude of its displacemA boat heads straight across at 4 m/s in a 3 m/s current. Its speed over the ground?Which Greek letter denotes the angular speed of a body in circular motion?