0% 0 Physics Quiz 8 1 / 50 Which one does not work according to resonance ? Bulb Microwave oven Radio T.V 2 / 50 When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________? ? ?/2 20? 2? 3 / 50 The centripetal acceleration produced in a rotating body is commonly due to change on_________of body? direction magnitude None of these both 4 / 50 For which position maximum blood pressure in the body have the smallest value ? Standing straight Sitting on ground Sitting on chair Laying horizontally 5 / 50 If the volume of a gas is held constant and we increase its temperature then_______________? its pressure is constant any of above its pressure falls its pressure rises 6 / 50 The equation of continuity is obtained by applying in the law of conservation of_____________? Momentum All Energy Mass 7 / 50 In the transistor schematic symbol, the arrow______________? is locate on the collector points form north to south is located on the base is located on the emitter 8 / 50 Michelson devised the formula to calculate the speed of light_______________? C = 4fd C = 5/2fd C = 16fd C = 8fd 9 / 50 Venturi meter is used to measure_________________? None Fluid speed Fluid density Fluid pressure 10 / 50 Which one of the following has the largest energy content ? 106 photons of wavelength 50?m (infrared) 103 photons of wavelength 2 pm (?-rays) 106 photons of wavelength 200nm (UV) 102 photons of wavelength 1nm (x-rays) 11 / 50 In which process entropy remains constant________________? isothermal isobaric isochoric adiabatic 12 / 50 3rd law of motion explains______________________? existence of a force existence of pair of forces in nature effect of force existence of two forces 13 / 50 The unit of coefficient of linear expansion or volume expansion is__________? none K K-1 K -2 14 / 50 Electrical energy is converted to heat at the rate of___________________? I2R IRt VIt I2Rt 15 / 50 X-rays are electromagnetic waves like________________? ?-rays Heat waves Light waves Microwaves 16 / 50 Light reaches the earth form sun in nearly____________________? 8 minutes 10 minutes 15 minutes 8 minutes 30 seconds 17 / 50 A uniform steel wire of length 4m and area of cross-section 3?10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2?1011 Nm-2 the energy stored in the wire is___________________? 0.100J 0.50J 0.75J 0.025J 18 / 50 Identify the correct statement about minority carriers_____________? free electrons in n-type and p-type holes in n-type and p-type holes in n-type and free electrons in p-type free electrons in n-type and holes in p-type 19 / 50 Dioptre power of an concave lens of 10 cm focal length is_______________? 10 dioptre 10 dioptre 1 / 10 dioptre 1 / 10 dioptre 20 / 50 Mass defect per nucleon is ___________________? Packing fraction All of above are one and the same thing The binding energy of the nucleus The average energy of the nucleus 21 / 50 The escape velocity form the earth surface in km S-1 is____________________? 1.1 km S-1 7.5 km S-1 4.2 km S-1 9.5 km S-1 22 / 50 The velocity of a particle of mass m of de-Broglie wavelength ? is______________? v = 2 ?? 106 ms-1 v = 3 ?? 106 ms-1 v = 2 ?? 10 ms-1 v = 2 ?? 6 ms-1 23 / 50 Ideal fluid is_______________? Incompressible Steady flow Possess all properties Non-viscous 24 / 50 The SI unit of Heat is________? Volt Joule Newton Watt 25 / 50 Circuit which gives continuously varying potential is called _______________________? complex network all of above wheat stone bridge potential divider 26 / 50 The velocity of sound in air would become double than its velocity at 0?C at temperature________________? 586?C 819?C 1172?C 313?C 27 / 50 Laminar flow usually occurs at speeds_____________? High Very high Low Some time high and some time low 28 / 50 In optic fiber transmission the repeater are separated through a distance of __________ km in newer system? 100km 200km 20km 300km 29 / 50 Normal human body temperature 98.6?F corresponds to______________? 37?C 410?C 55?C 42?C 30 / 50 Coil of a galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always___________________? BINA tana BINA BINA sina BINA cosa 31 / 50 The blood flow is _______________ flow at systolic pressure? Turbulent Mixed Laminar None 32 / 50 The minimum wavelength of X-rays can further be reduced by _______________? Using a target element of higher atomic number Increasing the temperature of the filament. Increasing the potential difference between the cathode and the target Reducing the pressure or cooling the target 33 / 50 Maximum number of rectangular components are_____________? 4 2 3 1 34 / 50 In optic fiber transmission system _____________ are used regenerate the dim light signal? Repeaters Laser Diodes Transformer 35 / 50 Rutherford in his atomic model could not explain behavior of ___________ ? Protons Electrons Neutrino Neutrons 36 / 50 The characteristic X-rays spectrum is due to_____________? The illumination of the target metal by ultra-violet radiation The bombardment of target by electrons The bombardment of the target by protons The absorption of radiation by the target metal 37 / 50 At which angle the range of the projectile is maximum____________________? 30 45 none 60 38 / 50 The relation between horse power and watt is_________________? 1 hp = 1000 watts 1 hp = 946 watts 1 hp = 546 watts 1 hp = 746 watts 39 / 50 In an electron microscope, we use energetic particles because of______________? Kinetic energy is large All the above reasons Penetrating power is high Wavelength is very short 40 / 50 The dot product of force and velocity is__________________? power torque work impulse 41 / 50 An alternating current is represented by the equation I = I?sin?t which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ? I = 2I?Sin(?t/2) I = 2ISin?t I = 2I?Sin(2?t) I = I?sin(2?t) 42 / 50 In the following figure, the terminal potential is ___________________ ? 2V 36V 12V zero 43 / 50 Random errors can be reduced by_______________? Taking zero correction Comparing the instrument with another more accurate one Taking mean of several measurements All methods explained in A, B and C 44 / 50 Reciprocal of resistivity is called__________________? flexibility resistance inductance conductivity 45 / 50 The minimum distance between an object and its real image in a convex lens is_____________? 3f 4f 2.5 f 2 f 46 / 50 Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________? Limit Trajectory Range Firing level 47 / 50 Which one of the following is not an electromechanical instrument ? galvanometer voltmeter AC transformer and DC generator ammeter 48 / 50 The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is_________? chemistry information technology biology physics 49 / 50 The critical speed of an artificial satellite is_______________? 8.1 Kms-1 8 ms-1 7.9 Kms-1 8 Kms-1 50 / 50 Which is not optically active ? sugar sodium chlorate tartaric acid water 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 7 Physics Quiz 9Next
