Education 299 Questions Ask question Search Order By: ActiveTagClear Filter 1 Votes 1 Ans The displacement-time graphs of two moving particles make angles of 30° and 45° with the x-axis as shown in the figure. The ratio of their respective velocity is 96 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 0 Votes 1 Ans A copper wire of length 10 m and radius has electrical resistance of 10 Ω. The current density in the wire for an electric field strength of 10 (V/m) is 108 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans Two hollow conducting spheres of radii R1 and R2 (R1 >> R2) have equal charges. The potential would be (1) More on bigger sphere (2) More on smaller sphere (3) Equal on both the spheres (4) Dependent on the material property of the sphere 96 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 0 Votes 1 Ans A light ray falls on a glass surface of refractive index , at an angle 60°. The angle between the refracted and reflected rays would be (1) 30° (2) 60° (3) 90° (4) 120° 119 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans A body of mass 60 g experiences a gravitational force of 3N, when placed at a particular point. The magnitude of the gravitational field intensity at that point is (1) 0.05 N/kg (2) 50 N/kg (3) 20 N/kg (4) 180 N/kg 108 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans The ratio of the distances travelled by a freely falling body in the 1st, 2nd, 3rd and 4th second (1) 1 : 2 : 3 : 4 (2) 1 : 4 : 9 : 16 (3) 1 : 3 : 5 : 7 (4) 1 : 1 : 1 : 1 101 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans Two resistors of resistance, 100 Ω and 200 Ω are connected in parallel in an electrical circuit. The ratio of the thermal energy developed in 100 Ω to that in 200 Ω in a given time is (1) 1 : 2 (2) 2 : 1 (3) 1 : 4 (4) 4 : 1 119 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans A square loop of side 1 m and resistance 1 Ω is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is (1) 2 weber (2) 0.5 weber (3) 1 weber (4) Zero weber 102 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans In a Young double slit experiment a student observes 8 fringes in a certain segment of the screen when a monochromatic light of 600 nm wavelength is used. If the wavelength of light is changed to 400 nm, then the number of fringes he would observe in the same region of the screen is (1) 6 (2) 8 (3) 9 (4) 12 107 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans The energy that will be ideally radiated by a 100 kW transmitter in 1 hour is 111 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans The peak voltage of the ac source is equal to (1) The value of voltage supplied to the circuit (2) The rms value of the ac source (3) times the rms value of the ac source (4) times the rms value of the ac source 99 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans The ratio of the radius of gyration of a thin uniform disc about an axis passing through its centre and normal to its plane to the radius of gyration of the disc about its diameter is 110 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans In the given nuclear reaction the element X is 96 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is 115 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans When two monochromatic lights of frequency ν and are incident on a photoelectric metal, their stopping potential becomes and Vs respectively. The threshold frequency for this metal is 190 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 0 Votes 1 Ans The angle between the electric lines of force and the equipotential surface is (1) 0° (2) 45° (3) 90° (4) 180° 99 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 m/s. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is : (1) 23000 (2) 20000 (3) 34500 (4) 23500 104 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans If a soap bubble expands the pressure inside the bubble (1) Decreases (2) Increases (3) Remains the same (4) Is equal to the atmospheric pressure 104 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is 100 viewsAditya Bhatt Answered question 12 February 2024EducationPhysics 1 Votes 1 Ans A shell of mass m is at rest initially It explodes into three fragments having mass in the ratio 2 : 2 : 1. If the fragments having equal mass fly off along mutually perpendicular directions with speed v, the speed of the third (lighter) fragment is 105 viewsAditya Bhatt Answered question 11 February 2024EducationPhysics « Previous 1 2 … 6 7 8 9 10 … 14 15 Next »
