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