0% 0 Physics Quiz 10 1 / 50 Which one has the greatest energy gap ? Non metals Conductor Semi conductor Metals 2 / 50 Mass of neutron is________________? 1.67 x 10-31 kg 1.67 x 10-27 kg 9.1 x 10-31 kg 1.67 x 10-19 kg 3 / 50 The magnetic field strength of solenoid is__________________? Both B and C B = ?NI B = ?N/I B = ?nI 4 / 50 Which one of the following radiation possesses maximum penetrating power ? ?-rays X-rays All have the equal penetrating powe B-rays 5 / 50 Medium which sends signal from source to destination is known as ________ ? Hardware Transmission channel Transmitter Receiver 6 / 50 Time rate of change of momentum is equal to____________________? impulse both A and C velocity force 7 / 50 Electromagnetic waves transport___________________? Momentum Heat Mass Energy 8 / 50 When the speed of a moving body is doubled then___________________? its momentum is doubled its acceleration is doubled its P.E is doubled its K.E is doubled 9 / 50 To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________? 5 4 2 3 10 / 50 The Branch of Physics deals with highly energetic ions is called__________? Plasma physics Elementary articles Article physics Ionic physics 11 / 50 Prefix deca represents_______________? 10 Raised to power 2 10 Raised to power 3 10 Raised to power -1 10 Raised to power 1 12 / 50 Gravitation force of earth is___________? None of these 7.21 m/s? 1.62 m/s? 9.80 m/s? 13 / 50 At what temperature is the Fahrenheit scale reading equal to twice that of the Celsius scale? 280?C 160?C 460?C 360?C 14 / 50 Optical active crystals rotates the __________________? diffraction plane polarization plane interference plane vibrating plane 15 / 50 Two sources of light are coherent if they emit rays of_______________? same amplitude of vibration same wave length with constant phase difference same wavelength same amplitude and wavelength 16 / 50 In a semiconductors the charge carriers are ___________________? All of the above Electron and holes both Electrons only Holes only 17 / 50 Newton estimated the speed of sound _____________________? all of the above 333m/sec 340m/sec 281m/sec 18 / 50 Which of the following pair has same direction always ? force, acceleration force, momentum force, velocity force, displacement 19 / 50 The trajectory (or path) of a projectile is_________________? straight line hyperbola parabola circle 20 / 50 The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field the orbit will be__________________? an ellipse helix a spiral a circle 21 / 50 Terminal velocity is given by equation_______________? Vt = gr2? Vt = 2gr2/9? Vt = 9gr2/2? Vt = gr2/9? 22 / 50 Resistance of a conductor depends upon_________________? nature of conductor all of above physical state of the conductor dimension of conductor 23 / 50 If the wavelength of incident radiation is increased in photoemission then_________________? The average kinetic energy of the photoelectrons decreases The maximum kinetic energy of the photoelectrons increases The minimum kinetic energy of the photoelectrons decreases The minimum kinetic energy of the photoelectrons increases 24 / 50 One light year is equal to________________? 9.5x1015cm 9.5x1015Km 9.5x1015m 9.5x1015sec 25 / 50 Waves emitted from the antenna are__________________? Electromagnetic waves Sound waves Radio waves Modulated waves 26 / 50 Reverse process of photoelectric effect is_______________? Compton effect pair production annihilation of matter X-rays production 27 / 50 A thing that emits its own light is___________________? non-luminous bright luminous incandescent 28 / 50 The length of the second pendulum is________________? 98 cm 99.2 cm 99 cm 100 cm 29 / 50 An OP-AMPs can amplify_______________? D.C. A.C. Both A.? C. & D.C. None of the above 30 / 50 Gravitation force of earth is___________? 9.80 m/s? None of these 1.62 m/s? 7.21 m/s? 31 / 50 In any measurement the significant figures are______________? All accurately known and all doubtful digits Only doubtful digits Only accurately known digits All accurately known digits and the first doubtful digit 32 / 50 Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then_____________? B has a negative magnitude B is anti-parallel to A B is a negative vector of A B is perpendicular to A 33 / 50 Which of the following is not derived quantity________? Volume Area Time Density 34 / 50 In full wave rectification the output D.? C. voltage across the load is obtained for_____________? All of the above. The negative half cycle of input A.C. The complete cycle of input A.C. The positive half cycle of input A.C. 35 / 50 The magnitude of i^. (j^ x k^) is________________? -1 0 1 i^ 36 / 50 The energy absorbed by a body is __________________ at resonance? Minimum only 0 Maximum only Maximum as well minimum 37 / 50 The first book of Physics was written by__________? Kelvin Aristotle Faraday Newton 38 / 50 The work done in the isochoric process is________________? constant zero depends on situation variable 39 / 50 A vacant or partially filled band is called _____________________? Forbidden band Valence band Empty band Conduction band 40 / 50 Which shows the correct relation between time of flight T and maximum height H ? H=8g/T2 H=gT2/8 H=gT2 H=8T2/g 41 / 50 Photoelectric effect was given by ____________________? Plank Einstein Fresnel Hertz 42 / 50 SI unit of torque is______________? Both a and b are correct Neither a nor b is correct joule N.m 43 / 50 Adiabatic process is also called______________? Isentropic process Heat exchange process Heating process All of the above 44 / 50 In simple cube one atom or molecule lies at its______________________? Eight corners Six corners Nine corners Force corners 45 / 50 Mark the wrong statement ? Newtons laws of motion are valid in an accelerated (non inertial) frame of reference a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference an un-accelerated frame of reference is called an inertial frame of reference all the frames of reference in uniform rectilinear motion are equivalent 46 / 50 S.I unit of frequency is_________________? ms-1 Hertz Radian Vibration S-2 47 / 50 The area under the force displacement graph represents__________________? work done none of these area power 48 / 50 The breaking of crystals along definite direction is called _____________________? Isotropy Cleavage Homogeneity Symmetry 49 / 50 The period of a circular motion is given by_______________? T = ?w T = ?v T = 2?r/v T = 2?r 50 / 50 The unit of entropy is________________? N.m/sec J/K J.K Kgm2/sec2.K Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevPhysics Quiz 9 Physics Quiz 11Next
