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