0% 0 Physics Quiz 4 1 / 50 The charge on neutron is_______________? Minus 1.6 x 10-19C Zero Plus 1.6 x 10-19C No definite charge 2 / 50 Which one is the highest power multiple ? Beta Mega Giga Deca 3 / 50 A choke is used as a resistance in_________________? Both AC and DC circuit DC circuit AC circuits Full wave rectifier circuit 4 / 50 An alpha particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus ? 224 ? 84 226 ? 87 222 ? 86 220 ? 80 5 / 50 In case of a simple pendulum, the cause of damping is__________________? None of these Gravity Tension in the string Drag force of air 6 / 50 Alpha particle ionizes an atom_________________? Through electrostatic repulsion Through electrostatic attraction Through direct collision All of above 7 / 50 Sphygmomanometers measures blood pressure ? None of these Dynamically Some time static and sometimes dynamic Statically 8 / 50 ML-1 T-2 is the dimension of_______________? Energy Momentum Pressure Force 9 / 50 In which process all the heat supplied is converted into work done ? isochoric isobaric isothermal isentropic 10 / 50 A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________? Zero T/g g/T Infinite 11 / 50 The rotational K.E of the hoop is equal to the______________? half than its translational K.E four times than its translational K.E its translational K.E double than its translational K.E 12 / 50 Petrol engine is a________________? C.I engine SI engine all the above IC engine 13 / 50 The dimension of force is__________________? MLT-2 MLT-1 ML-1T-2 ML-1T 14 / 50 In an electronic transition atom cannot emit______________? ?-rays Ultraviolet rays Visible light Infra red radiation 15 / 50 When the body moves with terminal velocity the acceleration in the body become_____________? Maximum Infinite Variable 0 16 / 50 Hydrogen atom does not emit X-rays because _________________? its energy levels are too close to each other its energy levels are too far apart it has a single electron it is too small in size 17 / 50 Galvanometer is a very sensitive device with______________________? very low damping radial field disintegration very high damping no damping at all 18 / 50 When X-rays are passed through successive aluminum sheets what happens to their thickness ? it decreases increases it remains same sometimes increases and sometimes decreases 19 / 50 The efficiency of the Carnot engine working between 150?C and 50?C is__________? 29.40% 23.60% 50% 100% 20 / 50 In Compton scattering, the change in wavelength is maxed if_______________? The angle of scattering is 0 The angle of scattering is 60? The angle of scattering is 180? The angle of scattering is 90? 21 / 50 The radiations emitted form hydrogen filled discharge tube show____________? line spectrum continuous spectrum absorption spectrum band spectrum 22 / 50 A fuse is placed in series with the circuit to protect against__________________? over heating high power high voltage high current 23 / 50 When arrow is released form its bow, its energy is transformed from _____________________? elastic P.E to K.E elemical energy to elastic P.E heat energy to K.E K.E to elastic P.E. 24 / 50 In multiplication and division of measurement______________? Absolute uncertainties are added Percentage uncertainties are added Percentage uncertainties are divided Absolute uncertainties are divided 25 / 50 Two vectors A and B are making angle ? with each other. The scalar projection of vector B on vector A is written as____________? Both a and b are correct A.B/A A.cos? A.B/B 26 / 50 The cross product of two vectors is a negative vector when______________? They are anti parallel vectors They are rotated through 270? They are parallel vectors They are a perpendicular vector 27 / 50 Non-inverting amplifier circuits have____________? A very low input impedance A low output impedance None of the above A very high input impedance 28 / 50 Crystals of a material can behave as_________________? Concave Diffraction grating Convex lens Interferometer 29 / 50 The number of significant figures in the length of a bar 6200mm measured by meter rod is_______________? None of these 4 3 2 30 / 50 When collision between the bodies in a system is inelastic in nature then for system ____________________? K.E changes but momentum remain conserve momentum changes but K.E remain conserve both momentum and K.E remain conserve both momentum and K.E changes 31 / 50 The waves that require a material medium for their propagation are called__________________? electromagnetic waves matter waves carrier waves mechanical waves 32 / 50 Which one of the following is not a donor impurity ? phosphorus antimony arsenic aluminium 33 / 50 Value of permeability of free space in SI units is___________________? 4?x10-7 WbA-1m-1 4?x10-8 WbA-1m-1 4?x10-9 WbA-1m-1 4?x10-10 WbA-1m-1 34 / 50 The number of significant figures in 5.400 is________________? None 2 5 3 35 / 50 For confinement of electron in a box of radius 10-14m the electron, speed should be_____________? Should be greater than the speed of light. 107m/sec Not be wave-like Be zero 36 / 50 Numerical value of Boltzmanns constant is______________? 1.38?10-31JK-1 1.38?10-23JK-1 3.18?10-23JK-1 3.18?10-31JK-1 37 / 50 A point source of light placed in a homogeneous medium gives rise to ___________________? a cylindrical wave front an elliptical wave front a plane wave front a spherical wave front 38 / 50 When body is in motion, ____________ always changes? its velocity its acceleration its momentum its position vector 39 / 50 One radian is equal to______________? 60? 67.3? 87.3? 57.3? 40 / 50 Who were the pioneers of Physics? Greek Persians Latin Egyptians 41 / 50 For chain reaction to build up the size of the radioactive target should be______________? Less than the critical size Equal to the critical size Greater than the critical size All of above can build up a change reaction 42 / 50 2nd law of motion gives the definition of________________? acceleration velocity both force and acceleration force 43 / 50 Magnifying power of simple microscope______________? list distance of distinct vision no effect with decrease or increase with focal length increase with decrease in focal length increase with increase in focal length 44 / 50 Triple point of water is_____________________? 273.16?C at 0.611 Kpa 273?C at 6.11 Kpa 273K at 61.6 Kpa 273.16K at 750 Kpa 45 / 50 The existence of Ether wind was experimentally rejected by__________________? double of its rest mass zero infinite equal to its rest mass 46 / 50 A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is____________________? The cross sectional area of the wire remains constant The weight of the wire is negligible The extension of the wire is proportional to the force applied The wire is not stretched beyond its elastic limit 47 / 50 A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________? (stress/strain) (Stress / strain) Stress x strain Stress/strain 48 / 50 Name the SI unit having the symbol cd? Cm Ampere Second Candela 49 / 50 Which one of the following materials is useful for making bulb filaments ? copper tungsten nichrome constantan 50 / 50 The mass attached to a spring executes ? Rotatory motion Vibratory motion S.H.M Both A and C 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 3 Physics Quiz 5Next
