PHYSICS TEST 1 Please don't use any search browser to find the answer. Just do it yourself so you can measure your knowledge power. Best of Luck! Please! Enter Password 1 / 50 Which of the following is not present in AC generator: Slip rings Armature Commutator Magnet 2 / 50 Which of the following is least multiple: Nano Atto Pico Femto 3 / 50 The charge on the electron was calculated by: Faraday Einstein J.J. Thomson Millikan 4 / 50 One amu is equal to __________ 9.31 MeV 931 MeV 0.931 MeV 93.1 MeV 5 / 50 If the temperature of the sink is decreased, the efficiency of Carnot engine: First increases and then decreases Remains the same Decreases Increases 6 / 50 The charges on the quarks are Fraction Half unit One unit None of these 7 / 50 In RLC series AC circuit, when XL = XC then impedance is Zero Minimum Maximum None 8 / 50 The property of a system that remains constant during an adiabatic process is called: Entropy Temperature Internal energy Pressure 9 / 50 The SI unit of coefficient of viscosity is: 𝑘𝑔 𝑚−1 𝑠−1 𝑘𝑔 𝑚−2𝑠−2 𝑘𝑔 𝑚−2 𝑠−1 𝑘𝑔 𝑚2 𝑠 10 / 50 The emf of two cells can be compared by AVO meter Galvanometer Voltmeter Potentiometer 11 / 50 Lenz’s law is in accordance with the law of conservation of: Momentum Angular momentum Energy Charge 12 / 50 The oscillations in which amplitude decreased steadily with time are called: Natural oscillations Forced oscillations Damped oscillations Free oscillation 13 / 50 During charging of a capacitor, the ratio of instantaneous charge and maximum charge on plates of capacitors at t = RC is 30% 36.8% 20% 63.2% 14 / 50 An accurate measurement of emf of a cell is made by A potentiometer A voltmeter An ammeter All of them 15 / 50 For which position, blood pressure in the body have the smallest value? Standing straight Sitting on chair Lying horizontally Sitting on ground 16 / 50 If a radioactive isotope of silver have a half life of about 7.5 days. After 15 days the remaining isotope of its original is 50% 15% 7.5% 25% 17 / 50 Pull of earth on a mass of 20 kg on the surface of the earth is 1960 N 196 N 19.6 N 20 N 18 / 50 Photon ‘A’ has twice the energy of photon ‘B’. What is the ratio of the momentum of ‘A’ to that of ‘B’? None 2 : 1 1 : 2 4 : 1 19 / 50 [ML-1 T -2] is the dimension of Force Pressure Momentum Energy 20 / 50 Doppler Effect applies to Neither sound nor light wave Sound wave only Both sound and light wave Light wave only 21 / 50 When motor is at its Max. speed the back e.m.f will be Cannot tell Zero None of these Maximum 22 / 50 Distance covered during one vibration of an oscillating body in term of amplitude A is: 𝐴 /2 4𝐴 2𝐴 𝐴 23 / 50 Work done on the body equals to the Change in it K.E and change in its P.E Change in its K.E always Change in its P.E always Neither change in K.E nor change in its P.E 24 / 50 The phase difference between coils of three phase A.C is 45 60 90 120 25 / 50 The SI unit of plane angle is Radian Degree Candela Steradian 26 / 50 The internal energy of an ideal gas is directly proportional to: Translational kinetic energy Vibrational kinetic energy None of these Potential energy 27 / 50 An example of scalar quantity is Displacement Velocity Speed Torque 28 / 50 The idea of quantization of energy was proposed by Max Planck None of these Einstein Compton 29 / 50 The resistance between (+) and (-) of ideal Op-Amp is Infinity Low Moderate High 30 / 50 Types of quarks are: 10 6 8 4 31 / 50 Slope of velocity time graph is Acceleration Momentum Force Distance 32 / 50 Heat is the form of: Motion Energy Work Power 33 / 50 If a body of mass 10 kg is allowed to fall freely, its weight becomes. 10N 9.8N zero 98N 34 / 50 During projectile motion, the horizontal component of velocity: Changes with time Remains constant Becomes zero Increases with time 35 / 50 Boyle’s law holds for ideal gases in Isothermal processes Adiabatic processes Isobaric processes Isochoric processes 36 / 50 Tolerance for silver band is: ±15% ±10% ±20% ±5% 37 / 50 In which process entropy remains constant. Isothermal Adiabatic Isochoric Isobaric 38 / 50 The magnitude of dot and cross product of two vectors are 6√3 and 6 respectively. The angle between them will be 30 ° 0° 45 degree 60 ° 39 / 50 The critical temperature for mercury is: 3.7 K 1.18 K 4.2 K 7.2 K 40 / 50 The dimensions of stain are [M -1 L-1 T -1] [M o Lo T o ] [ML-2 T] [MLT 2 ] 41 / 50 The frequency of waves produced in microwaves oven is: 1435 MHz 2850 MHz 1860 MHz 2450 MHz 42 / 50 Voltmeter is used to measure: Temperature Potential difference Current Resistance 43 / 50 The Celsius scale starts from: 273 𝐾 32°𝐹 0°𝐶 373 𝐾 44 / 50 The temperature of the core of the reactor rises to about 1300oC 1000oC 1100oC 1200oC 45 / 50 The constant K in Coulomb’s Law depends upon Intensity of charge System of units Nature of medium Both a & b 46 / 50 The least distance of distinct vision for a normal eye is: 30 cm 15 cm 25 cm 40 cm 47 / 50 The minimum number of unequal forces whose resultant will be zero 5 2 4 3 48 / 50 How many times per second will an incandescent lamp reach maximum brilliance when connected to a 50Hz source? 100 times None of these 50 times 200 times 49 / 50 LASER light has the property of: Sound waves Non-coherent waves Coherent waves Water waves 50 / 50 Which of the following is similar to electron 𝛾 – rays Photons 𝛼 − rays 𝛽 − rays Your score is 0% Restart quiz
