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