XI Physics| Past Paper MCQs |2012|Talha's Physics Academy
This Video contains solution of the following MCQs. 1. The length of Galilean telescope is equal to: *fo/fe * fo- fe * fe- fo * fe + fo 2. The S.I unit of intensity level of sound is: *watt * diopter * sone * decibel 3. If the axis of rotation of a rotating body passes through the body itself, then its motion is called: *linear motion * orbital motion * spin motion * S.H.M 4. If magnifying power of simple microscope is 6, the focal length of lens used is: *6 cm * 5 cm * 25 cm * -5 cm 5. The property of fluids due to which they resists their flow is called: *co efficient of friction * static friction * viscosity * terminal velocity 6. The frequency of wave produced in a stretched string depends upon: *length * tension * linear density * all of these 7. According to Maxwell theory, light travels in the form of: *transverse wave * longitudinal wave * mechanical wave * electromagnetic wave 8. At a distance equal to the radius of earth above the earth’s surface, the value of gravitational acceleration becomes: *half * one forth * double * four times 9. The products of two numbers 5.642 and 4.71 in the prospective significant number are: *26.57382 * 26.574 * 26.6 * 26.5738 10. Huygens’s principle is used to: *determine the speed of light * locate the wave front * expressed polarization * find the refractive index 11. A bucket of mass 10 kg is moved downwards in the gravitational field through a distance of 1 m. The work done in this case is equal to: *10 J * 98 J * -98 J * 0.1 J 12. The magnitude of torque depends upon: *The distance of F from origin * The distance of –F from origin * Distance between F and –F * None of these 13. Sin θ= θ if θ is specially less than: *150 * 100 * 50 * 1 radian 14. The rate of doing work is zero when the angle between force and velocity is: *00 * 450 * 1800 * 900 15. If A=a i and B=bj , then A x B is equal to: *0 * ab k * -ab k * none of these 16. The velocity of a body is doubled and mass is reduced to one fourth of its initial value, the K.E is: *doubled * fourfold * same * halved 17. A helicopter weighing 3920 N is moving up with a constant speed of 4 m/s. The force on the helicopter is: *4720 N * 3920N * 3924 N * 3916N _____________________________________ XI Lectures :https://www.youtube.com/playlist?list=PLU338n3T61tMfdM13yCI1Yhlgh_OGuwX1 XI Solved Numericals:https://www.youtube.com/playlist?list=PLU338n3T61tNjdw_c0P2f0KczhoFE6stA XII Lectures: https://www.youtube.com/playlist?list=PLU338n3T61tNORy5ObQSrNHGlNEgKSNKN XII Solved Numericals:https://www.youtube.com/playlist?list=PLU338n3T61tOE3aPqIag7EDbpj2sNXfNH __________________________________________________________ ►Our Website: https://talhaphysicsacademy.blogspot.com/ ► Follow us on Facebook : https://www.facebook.com/TalhaPhysicsAcademy/ ► Follow us on Twitter: https://twitter.com/tphysicsacademy
This Video contains solution of the following MCQs. 1. The length of Galilean telescope is equal to: *fo/fe * fo- fe * fe- fo * fe + fo 2. The S.I unit of intensity level of sound is: *watt * diopter * sone * decibel 3. If the axis of rotation of a rotating body passes through the body itself, then its motion is called: *linear motion * orbital motion * spin motion * S.H.M 4. If magnifying power of simple microscope is 6, the focal length of lens used is: *6 cm * 5 cm * 25 cm * -5 cm 5. The property of fluids due to which they resists their flow is called: *co efficient of friction * static friction * viscosity * terminal velocity 6. The frequency of wave produced in a stretched string depends upon: *length * tension * linear density * all of these 7. According to Maxwell theory, light travels in the form of: *transverse wave * longitudinal wave * mechanical wave * electromagnetic wave 8. At a distance equal to the radius of earth above the earth’s surface, the value of gravitational acceleration becomes: *half * one forth * double * four times 9. The products of two numbers 5.642 and 4.71 in the prospective significant number are: *26.57382 * 26.574 * 26.6 * 26.5738 10. Huygens’s principle is used to: *determine the speed of light * locate the wave front * expressed polarization * find the refractive index 11. A bucket of mass 10 kg is moved downwards in the gravitational field through a distance of 1 m. The work done in this case is equal to: *10 J * 98 J * -98 J * 0.1 J 12. The magnitude of torque depends upon: *The distance of F from origin * The distance of –F from origin * Distance between F and –F * None of these 13. Sin θ= θ if θ is specially less than: *150 * 100 * 50 * 1 radian 14. The rate of doing work is zero when the angle between force and velocity is: *00 * 450 * 1800 * 900 15. If A=a i and B=bj , then A x B is equal to: *0 * ab k * -ab k * none of these 16. The velocity of a body is doubled and mass is reduced to one fourth of its initial value, the K.E is: *doubled * fourfold * same * halved 17. A helicopter weighing 3920 N is moving up with a constant speed of 4 m/s. The force on the helicopter is: *4720 N * 3920N * 3924 N * 3916N _____________________________________ XI Lectures :https://www.youtube.com/playlist?list=PLU338n3T61tMfdM13yCI1Yhlgh_OGuwX1 XI Solved Numericals:https://www.youtube.com/playlist?list=PLU338n3T61tNjdw_c0P2f0KczhoFE6stA XII Lectures: https://www.youtube.com/playlist?list=PLU338n3T61tNORy5ObQSrNHGlNEgKSNKN XII Solved Numericals:https://www.youtube.com/playlist?list=PLU338n3T61tOE3aPqIag7EDbpj2sNXfNH __________________________________________________________ ►Our Website: https://talhaphysicsacademy.blogspot.com/ ► Follow us on Facebook : https://www.facebook.com/TalhaPhysicsAcademy/ ► Follow us on Twitter: https://twitter.com/tphysicsacademy