CBSE Class 11 (Science) Optics — practice questions
25 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Optics in the app →Newton's first law of motion is also known as the law ofA cricket ball of mass 150 g moving at (3i+4j) m/s is hit to -(3i+4j) m/s. The magnitude of momentum change isConservation of linear momentum in a collision follows directly fromA force F acts on a 2 kg body for 3 s, changing its speed from 2 m/s to 8 m/s along the line of F. The magnituThe maximum static friction force on a body is f = μN. Static friction is best described asA 10 kg block on a frictionless surface is pulled by 20 N horizontally and 20 N at 60° above horizontal. The hImpulse equalsA body in equilibrium under several forces hasA 0.5 kg ball hits a wall at 10 m/s and rebounds at 10 m/s. The impulse on the ball isNewton's second law in vector form isA lift accelerates upward at 2 m/s². The apparent weight of a 50 kg person (g=10) isTwo blocks of 2 kg and 3 kg connected by a string are pulled by 10 N on the 3 kg block (frictionless). The accThe SI unit of force, the newton, equalsAs per your syllabus, the momentum p of a body of mass m moving with velocity v is which?As per your syllabus, a body moving on it must do which?As per your syllabus, Newton's SECOND law in SI units states which relation?As per your syllabus, the SI unit of force is the newton, with one newton equal to which value?As per your syllabus, the IMPULSE J of a force F acting for time Δt equals which quantity?As per your syllabus, for a body of constant mass, the second law reduces to which form?As per your syllabus, the impulse-momentum theorem states that the impulse on a body equals which quantity?As per your syllabus, the total momentum of an ISOLATED system (no external force) is which?As per your syllabus, conservation of momentum applies in which kind of collisions between two bodies?As per your syllabus, which statement about the labels is true?As per your syllabus, KINETIC (sliding) friction is approximately given by which relation?As per your syllabus, the coefficients of static and kinetic friction satisfy which order?