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