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