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