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 When motor is at its Max. speed the backĀ e.m.f will be Maximum Cannot tell None of these Zero 2 / 50 During projectile motion, the horizontal component of velocity: Increases with time Changes with time Remains constant Becomes zero 3 / 50 Heat is the form of: Power Motion Work Energy 4 / 50 Voltmeter is used to measure: Potential difference Current Temperature Resistance 5 / 50 The SI unit of plane angle is Radian Steradian Candela Degree 6 / 50 The minimum number of unequal forces whose resultant will be zero 2 3 4 5 7 / 50 Tolerance for silver band is: Ā±5% Ā±20% Ā±10% Ā±15% 8 / 50 Slope of velocity time graph is Distance Acceleration Force Momentum 9 / 50 Types of quarks are: 10 8 4 6 10 / 50 The oscillations in which amplitude decreased steadily with time are called: Forced oscillations Free oscillation Natural oscillations Damped oscillations 11 / 50 Pull of earth on a mass of 20 kg on the surface of the earth is 196 N 19.6 N 20 N 1960 N 12 / 50 Distance covered during one vibration of an oscillating body in term of amplitude A is: š“ /2 4š“ 2š“ š“ 13 / 50 Photon āAā has twice the energy of photon āBā. What is the ratio of the momentum of āAā to that of āBā? None 1 : 2 2 : 1 4 : 1 14 / 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% 15 / 50 Which of the following is similar to electron š½ ā rays š¾ ā rays Photons š¼ ā rays 16 / 50 Which of the following is not present in AC generator: Commutator Armature Slip rings Magnet 17 / 50 Which of the following is least multiple: Nano Atto Pico Femto 18 / 50 The phase difference between coils of three phase A.C is 90 60 120 45 19 / 50 For which position, blood pressure in the body have the smallest value? Sitting on ground Sitting on chair Lying horizontally Standing straight 20 / 50 Lenzās law is in accordance with the law of conservation of: Charge Angular momentum Momentum Energy 21 / 50 The internal energy of an ideal gas is directly proportional to: None of these Translational kinetic energy Vibrational kinetic energy Potential energy 22 / 50 The temperature of the core of the reactor rises to about 1000oC 1100oC 1200oC 1300oC 23 / 50 One amu is equal to __________ 931 MeV 0.931 MeV 9.31 MeV 93.1 MeV 24 / 50 In RLC series AC circuit, when XL = XC then impedance is Minimum Zero None Maximum 25 / 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 26 / 50 How many times per second will an incandescent lamp reach maximum brilliance when connected to a 50Hz source? None of these 200 times 50 times 100 times 27 / 50 The least distance of distinct vision for a normalĀ eye is: 15 cm 25 cm 30 cm 40 cm 28 / 50 The constant K in Coulombās Law depends upon Nature of medium Intensity of charge Both a & b System of units 29 / 50 An accurate measurement of emf of a cell is made by An ammeter All of them A potentiometer A voltmeter 30 / 50 The emf of two cells can be compared by Voltmeter Potentiometer AVO meter Galvanometer 31 / 50 If a body of mass 10 kg is allowed to fall freely, its weight becomes. 9.8N 10N 98N zero 32 / 50 The SI unit of coefficient of viscosity is: šš šā2š ā2 šš šā1 š ā1 šš šā2 š ā1 šš š2 š 33 / 50 [ML-1 T -2] is the dimension of Momentum Pressure Energy Force 34 / 50 In which process entropy remains constant. Adiabatic Isobaric Isothermal Isochoric 35 / 50 If the temperature of the sink is decreased, the efficiency of Carnot engine: Remains the same First increases and then decreases Increases Decreases 36 / 50 The charges on the quarks are Half unit Fraction None of these One unit 37 / 50 LASER light has the property of: Coherent waves Non-coherent waves Water waves Sound waves 38 / 50 An example of scalar quantity is Displacement Speed Torque Velocity 39 / 50 The charge on the electron was calculated by: Faraday Millikan J.J. Thomson Einstein 40 / 50 The magnitude of dot and cross product of two vectors are 6ā3 and 6 respectively. The angle between them will be 45 degree 0Ā° 60 Ā° 30 Ā° 41 / 50 The Celsius scale starts from: 273 š¾ 32Ā°š¹ 0Ā°š¶ 373 š¾ 42 / 50 During charging of a capacitor, the ratio of instantaneous charge and maximum charge on plates of capacitors at t = RC is 20% 63.2% 36.8% 30% 43 / 50 Doppler Effect applies to Light wave only Neither sound nor light wave Both sound and light wave Sound wave only 44 / 50 The frequency of waves produced in microwaves oven is: 1435 MHz 1860 MHz 2850 MHz 2450 MHz 45 / 50 The idea of quantization of energy wasĀ proposed by Max Planck Einstein Compton None of these 46 / 50 The dimensions of stain are [M o Lo T o ] [M -1 L-1 T -1] [ML-2 T] [MLT 2 ] 47 / 50 The critical temperature for mercury is: 1.18 K 7.2 K 4.2 K 3.7 K 48 / 50 The property of a system that remains constant during an adiabatic process is called: Pressure Entropy Internal energy Temperature 49 / 50 The resistance between (+) and (-) of ideal Op-Amp is Moderate Low High Infinity 50 / 50 Boyleās law holds for ideal gases in Isochoric processes Isobaric processes Adiabatic processes Isothermal processes Your score is 0% Restart quiz
