Physics Objective Choice Question MCQ
Categories: Education
1.Which among the following can be measured with Anemometer? [A] Water Velocity [B] Wind Velocity [C] Relative Humidity [D] Absolute Humidity Correct Answer: B 2.Which of the following term denotes the internal reaction force per unit area developed as a result of applied external force ? [A] Stress [B] Friction [C] Moment of Inertia [D] tension Correct Answer: A 3.Mach number is a measure of which of the following? [A] Speed [B] Heat Transfer [C] Static Pressure [D] Volume Correct Answer: A 4.“Svedberg Unit” is a unit of _________? [A] Concentration [B] Size [C] Density [D] Time Correct Answer: D 5.Which among the following is a correct definition of the Closed Fuel Cycle? [A] Preparation of fuel and subsequent processes during reactor operation [B] Closed Fuel Cycle refers to the process of separating the spent fuel [C] Closed Fuel cycle is the process in which spent fuel is reprocessed [D] Closed Fuel cycle is the process in which spent fuel is NOT reprocessed Correct Answer: C 6.While passing over an obstacle a light ray slightly bends round the corner. The phenomenon is known as__: [A] Scattering [B] Polarisation [C] Diffraction [D] Refraction Correct Answer: C 7.Optical Fibre technology works on which of these principles of Physics? [A] Bernoulli’s Principle [B] Newton’s law of Motion [C] Total internal reflection of Light [D] Photoelectric effect Correct Answer: C 8.The equation of motion ‘v = u +at’ can be applied in which of the following cases? [A] simple harmonic motion [B] circular motion [C] when acceleration is constant [D] Both b and c Correct Answer: C 9.The magnitude of the resultant of two vectors is maximum in which of the following case? [A] when vectors act in the same direction [B] when vectors act in the opposite direction [C] when vectors act at 90° to each other [D] None of the above Correct Answer: A 10.Which of the following is incorrect: [A] Gravitational force of attraction is independent of nature of intervening medium [B] Gravitational forces are central forces [C] Gravitational forces are non-conservative forces [D] All of the above Correct Answer: C 11.Curie the a unit of which of the following? [A] Luminescence [B] Radioactivity [C] Pressure [D] Mass Correct Answer: B 12.kg m2is the unit of which of the following physical quantities? [A] Linear Momentum [B] Angular Momentum [C] Angular Impulse [D] Moment of Inertia Correct Answer: D 13.What is the angular acceleration of a body moving with constant angular velocity? [A] equal to the angular velocity [B] 1 [C] 0 [D] Can’t be determined Correct Answer: C 14.Which of the following relations between Kinetic energy and Potential energy is true about solids? [A] Kinetic energy = Potential energy [B] Kinetic energy > Potential energy [C] Kinetic energy >> Potential energy [D] Kinetic energy < Potential energy Correct Answer: D 15.What will be the buoyant force acting on the stone, on being immersed in water, if it displaces 100gms of water? [A] 1000 gm-weight [B] 100 gm-weight [C] 10 gm-weight [D] 1 gm-weight Correct Answer: B 16.What happens to the liquid in a capillary of insufficient length? [A] liquid overflows from the upper end like a fountain [B] liquid tickles along the vertical sides of the tube [C] liquid does not rise at all [D] None of the above Correct Answer: D 17.What is the density of air at room temperature? [A] 1.41 [B] 1.75 [C] 1.29 [D] 1.9 Correct Answer: C 18.What is the oscillation in which the loss of oscillator is compensated by the supplying energy from an external source known as? [A] Free oscillation [B] Maintained oscillation [C] Forced oscillation [D] Damped oscillation Correct Answer: B 19.What is a perfectly black body? [A] A body which absorbs all the radiations incident on it [B] A body which has zero coefficient of linear expansion [C] A body which has zero absorptive power [D] A body painted black on all sides Correct Answer: A 20.On which of the following the molar specific heat capacity of a substance depends? [A] Nature of the substance [B] Temperature of the substance [C] Both a and b [D] None Correct Answer: C