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