AM Physics Test 2 Leave a Comment / By fawadtwopointo@gmail.com / August 23, 2025 Welcome to your AM Physics Test 2 . A projectile is fired at 45° with speed 20 m/s. What is its maximum range (g = 10 m/s²)? 20 m 50 m 30 m 40 m None . A body of mass 2 kg moves with velocity 3 m/s. Its kinetic energy is: 3 J 6 J 9 J 18 J None The escape velocity depends on: Mass of planet only Object’s density Mass of object only Radius and mass of planet None Two resistors 4 Ω and 6 Ω are connected in parallel. Their equivalent resistance is: 1.5 Ω 24 Ω 2.4 Ω 10 Ω None Which of the following has the highest frequency? Infrared Visible light Ultraviolet X-rays None The binding energy of nucleus is a measure of: Energy released when protons collide Energy needed to break nucleus into nucleons Nuclear charge Mass defect per proton None A Carnot engine has efficiency 40%. If the sink temperature is 300 K, what is source temperature? 400 K 500 K 600 K 700 K None In Bohr’s hydrogen atom, the angular momentum of electron is quantized as: nh h/2π n²h/2π nh/2π None A sound wave has frequency 200 Hz and speed 340 m/s. Its wavelength is: 1.2 m 0.85 m 2 m 1.7 m None . Which law explains the spectral distribution of blackbody radiation? Wien’s law Planck’s law Kirchhoff’s law Stefan’s law None The unit of magnetic flux is: Tesla Henry Gauss Weber None . Which of the following particles has the least mass? Alpha particle Electron Proton Neutron None If a satellite is revolving close to Earth’s surface, its time period is nearly: 24 hours 90 minutes 1 hour 12 hours None The relation between intensity (I) and amplitude (A) of wave is: I ∝ A I ∝ 1/A² I ∝ A² I ∝ 1/A None If frequency is doubled, wavelength becomes: Unchanged Zero Halved Doubled None Which physical quantity is conserved in elastic collisions only? Angular momentum Momentum Charge Kinetic energy None A body of weight 100 N is lifted 5 m. Work done is 100 J 500 J 20 J 1000 J None The unit of Planck’s constant is: J·s N·m J/s Js⁻¹ None Which quantum number describes orientation of orbital? Spin Magnetic Azimuthal Principal None Which of the following is NOT a scalar quantity? Temperature Acceleration Work Mass None Which process cannot increase entropy of system? Heat flow from hot to cold Irreversible expansion Free expansion Isothermal reversible expansion None . De Broglie wavelength of particle is given by: h/mv mv/h mc² hf None The torque on a coil in magnetic field is maximum when angle is: 0 45° 90° 180° None The value of universal gravitational constant G is: ) 9.8 N/kg 1.6×10⁻¹⁹ C 3×10⁸ m/s ) 6.67×10⁻¹¹ Nm²/kg² None If radius of orbit doubles, centripetal force becomes: One-fourth Double Same Half None Which electromagnetic wave has longest wavelength? Infrared Microwave Radio Gamma None The velocity ratio of ideal machine is always: Zero >1 =1 <1 None The principle of conservation of angular momentum explains: Satellite motion Elastic collision Ice skater spinning faster when arms folded Projectile motion None The dimension of energy is: MLT⁻¹ ML⁻¹T⁻² ML²T⁻² ) MLT⁻² None Which of the following has dimension of force? MLT⁻¹ ML²T⁻² M⁰L⁰T⁰ MLT⁻² None Time's up
