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