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