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