PMC Practice Test 1 physics portion with solution – Wisegot September 3, 2022 by ilmkidunya [ad_1] 3 / 51 Category: physics pmc past 3. Water waves are examples of 4 / 51 Category: physics pmc past 4. Pitch is __________ proportional to Frequency 5 / 51 Category: Physics >> Atomic spectra 5. If the temperature of Sun is doubled heat energy reached on earth become 6 / 51 Category: waves kpb(imp resources) 6. two consecutive nodes are separated by distance equal to 7 / 51 Category: Force and Motion-PMC 2022 (pp22) 7. Two bodies in contact experience forces in _______ The two bodies in contact will follow Newton’s third law of motion. The third law states that for every action there is an equal and opposite reaction. The two bodies will experience each other’s reaction forces in opposite directions. 8 / 51 Category: Force and Motion-PMC 2022 (pp22) 8. Is it possible to have a non-zero number of forces acting on an object (of non-zero mass), yet the object doesn’t acclerate? Newton’s second law states that the net force, or the vector sum of all the forces acting on an object, equals the mass times the acceleration. So, it is possible to have forces act on an object without acceleration if the forces are oriented such that they vector sum to zero. An example would be a person sitting in a chair. Gravity and the normal force both act on the person. However, these forces are equal in magnitude and opposite in direction. So the person doesn’t accelerate. 9 / 51 Category: Force and Motion-PMC 2022 (pp22) 9. Aslya goes 30 km towards North from a fixed point, then after turning to her right she goes 15 km. After this she goes 30 km after turning to her right. How far and in what direction is she now from her starting point? We have drawn the figure according to the information given in the question, (Let the turning points as shown in the figure) Hence, she is now 15 km East from her starting point 10 / 51 Category: Force and Motion-PMC 2022 (pp22) 10. newton third law can be derived from 11 / 51 Category: Force and Motion-PMC 2022 (pp22) 11. When A Horse Pulls A Wagon, The Force That Causes The Horse To Move Forward Is The Force When a horse pulls a wagon, the force that causes the horse to move forward is the force that pushes the ground in the backward direction. This is the third law of motion. 12 / 51 Category: Force and Motion-PMC 2022 (pp22) 12. while moving a boat forward we have to According to Newton’s third law of motion, every action has equal and opposite reaction. So if boatman wants to move the boat ahead in water, he has to push the water backwards. By pushing the water, boatman applies a force on water in backward direction. In turn, water applies the same amount of force in forward direction, moving the boat ahead. 13 / 51 Category: Force and Motion-PMC 2022 (pp22) 13. conservation of momentum is always applicable in The momentum of an isolated system of particles is conserved. The forces are internal in nature and sums up to zero for entire system. As the external force is zero on system it’s momentum remains conserved. 14 / 51 Category: Work and Energy-pmc 2022 (ppw) 14. work done by the spring force in a time interval cannot be 15 / 51 Category: Work and Energy-pmc 2022 (ppw) 15. If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbines, is ( take g=9.8m/s 16 / 51 Category: Work and Energy-pmc 2022 (ppw) 16. According to mechanical energy conservation: 17 / 51 Category: Work and Energy-pmc 2022 (ppw) 17. Potential energy of a spring at the equilibrium position is: The potential energy V(x) of the spring is considered to be zero when the spring is at the equilibrium position. 18 / 51 Category: Rotational and circular motion-ppc2022 18. The area of circle is measured with help of: Radius of the circle = Length of the Arc/Angular displacement 19 / 51 Category: Rotational and circular motion-ppc2022 19. Angular displacement becomes linear for_ arc lengths: 20 / 51 Category: Rotational and circular motion-ppc2022 20. The direction associated with angular displacement is given by : 22 / 51 Category: Waves-shm-ppo 22. In frequency modulation, which of the following property of the original signal does not change: in frequency modulation, the carrier amplitude remains constant, but its frequency is changed in accordance with the modulating signal. Specifically, the higher the amplitude of the information signal, the greater the frequency change. 23 / 51 Category: Waves-shm-ppo 23. What remains constant in an amplitude modulation? In amplitude modulation, the amplitude of the carrier wave is altered in accordance with the amplitude of the modulating signal. The frequency of the carrier wave is not altered in amplitude modulation. 24 / 51 Category: Thermodynamics-ppt2022 24. The specific heat of a gas in adiabatic process is: 25 / 51 Category: Thermodynamics-ppt2022 25. Molar heat capacity at constant pressure is given by: 26 / 51 Category: Thermodynamics-ppt2022 26. For a monatomic ideal gas of 3 mole, Cp -cv is: 27 / 51 Category: Electrostatic-ppe2022 27. Change in P .E per unit charge in the electric field is: Its Electric potential energy per unit charge = electric potential V = U/Q 28 / 51 Category: Electrostatic-ppe2022 28. Electric Potential which is measured with respect to the zero potential is called: Absolute Electrical potential is the amount of potential energy needed to move a unit positive charge from infinity to a specific point within the field. The electric potential at infinity is assumed to be zero 29 / 51 Category: Electrostatic-ppe2022 29. When a charge gets influenced by it s surrounding, it has entered: 30 / 51 Category: Electrostatic-ppe2022 30. The electric flux through a surface will be minimum when the angle between E and A is 31 / 51 Category: Electrostatic-ppe2022 31. The Force Per unit Charge is called as The correct option is C Electric fieldThe force per unit charge is known asE=F/qThis formula is for electric field intensity. 32 / 51 Category: Electrostatic-ppe2022 32. The device used to store a charge is called as: Capacitor is an electric device used to store charge and hence energy. So capacitor is used as an energy storing device 33 / 51 Category: current electricity-ppc2022 33. Basically a potentiometer is a device for 34 / 51 Category: magnetism-ppg2022 34. magnetic flux is a ____ Quantity 35 / 51 Category: magnetism-ppg2022 35. Tesla is the unit of ____ per unit area 36 / 51 Category: magnetism-ppg2022 36. The flow of charge produce? A stationary charge produces only electric field whereas a moving charge produces both electric as well as magnetic fields. 37 / 51 Category: Induction-ppi2022 37. Power loss in the actual transformer is due to: The four main types of loss are resistive loss, eddy currents, hysteresis, and flux loss. 38 / 51 Category: Induction-ppi2022 38. Ac transformer cannot Generate? Due to constant flux there will be no emf induced in primary or secondary and hence transformer will be of no use. So, you can safely say that Current Transformers cannot work with DC Supply. … This current is very high and can damage the winding of TransformAn alternating current creates a magnetic flux in the core on its way through the first winding, inducing the voltage in the others. It can convert high and low voltages, it cannot convert AC to DC. 39 / 51 Category: Induction-ppi2022 39. Ac Generator are similar to The basic principles of operation for an electric motor are the same as that of a generator, except that a motor converts electrical energy into mechanical energy (motion). An electric motor is a device that converts electrical energy into mechanical energy. 40 / 51 Category: Induction-ppi2022 40. Ac generators consist of ___ Poles An Ac generator consists of two poles i.e is the north pole and south pole of a magnet so that we can have a uniform magnetic field. There is also a coil which is rectangular in shape that is the armature. These coils are connected to the slip rings and attached to them are carbon brushes. 41 / 51 Category: Induction-ppi2022 41. The emf induced in a circuit according to to Faraday’s law depends upon Faraday’s law of induction is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force.The induced electromotive force in any closed circuit is equal to the negative of the time rate of change of the magnetic flux enclosed by the circuit. 42 / 51 Category: rectification-ppr2022 42. Which of the following rectifier uses Wheatstone bridge to rectify signal 43 / 51 Category: Dawn of Modern Physics-ppd2022 43. Wave nature and particle nature of photon are linked by 44 / 51 Category: Dawn of Modern Physics-ppd2022 44. x Rays is reversed processed of When fast moving electrons strike on high atomic weight substance ,X-ray is produced .In contrast,photoelectric effect takes place when radiation of suffucient frequecny incident on the metal surface and electrons ate emitte.Hence,X-ray is the inverse phenomenon of photoelectric effect. 45 / 51 Category: Dawn of Modern Physics-ppd2022 45. Wave particle duality does not describe? 46 / 51 Category: atomic spectra-ppa2022 46. A body at higher temperature T K radiates heat at a rate which is proportional to 47 / 51 Category: Nuclear phsyics-ppn2022 47. For two dawn Quarks total Charge is 48 / 51 Category: Nuclear phsyics-ppn2022 48. The direct exposure of sun light where ozone layer is depleted will cause 49 / 51 Category: Nuclear phsyics-ppn2022 49. The word radiation means 50 / 51 Category: Waves-shm-ppo 50. Energy emitted in the form of visible radiation is called 51 / 51 Category: Thermodynamics-ppt2022 51. if Cp=20 J/mol.K then for 1 mole gas we get Cv=___ . you can use Cp/Cv=1.7 Cp/Cv=1.720/1.7=CvCv=11.7 Your score is The average score is 0% [ad_2]
