Physics Test 10 Please don't use any search browser to find the answer. Best of Luck! Please! Enter Password 1 / 50 If the mass of a bob increases by 3 times, the time period of the pendulum will ? remain the same Be zero Become 3 times Become 1/3 times 2 / 50 In gasses, heat can be transferred through ? Radiation Convection only Conduction only None of these 3 / 50 The material between capacitor plates is an insulator, also known as a ? Inductor Resistor Conductor Dielectric 4 / 50 Human can't hear less than ? 40 Hz 20 Hz 10 Hz 25 Hz 5 / 50 Loudness is directly proportional to _____? Amplitude Wavelength Time Frequency 6 / 50 When light enters from a denser to a rarer medium, it bends ? Reflects back Away from the normal Does not bend Toward the normal 7 / 50 The magnetic field lines of a bar magnet are _? From south to north Outside the pipe Inside the pipe Discontinuous 8 / 50 Hydroelectric power is the energy generated from the ? Solar panels Heat of magma Movement of water Wind turbines 9 / 50 1 kb is equal to? 1024 bytes 1000 bytes 128 bytes 2048 bytes 10 / 50 The rate of change of momentum is called ? force Impulse Acceleration Velocity 11 / 50 Non-conductors are also called_______? Insulators Conductors Semiconductors Amplifiers 12 / 50 In Hooke's law, force is directly proportional to ? Volume Velocity Change in length Time 13 / 50 A diverging lens is also called a ? Concave lens Convex lens Biconvex lens Plano-convex lens 14 / 50 How many types of waves ? 5 4 3 2 15 / 50 When we cannot convert a galvanometer into an ammeter, we cannot connect a _____________? High resistance in series Low resistance in parallel High resistance in parallel Low resistance in series 16 / 50 If q is negative, the image is ? Magnified Real Virtual Erect 17 / 50 In gasses how heat Flow_? Conduction only Convection only Conduction and refraction Radiation, conduction, and convection 18 / 50 The rate of change of momentum is equal to ? Force Power Acceleration Energy 19 / 50 The principal focus of a mirror is the point where all the light rays reflected from the ? Center diverge Pole merge Mirrors converge Surface diverge 20 / 50 If q is positive, the image is ? Real Erect Virtual Magnified 21 / 50 Thermal energy types ? 4 5 2 3 22 / 50 1 mega is equal to? 10³ 10⁴ 10⁹ 10⁶ 23 / 50 heat can be transferred in gasses by ? Compression Conduction Radiation Expansion 24 / 50 In heat, gas is transferred through ? Reflection Conduction Convection Radiation 25 / 50 A wave moves upward and inward across the way if it is ? Interfering Refracting Diffracting Reflecting 26 / 50 In 1973, Jim Maxwell, Australian cricket commentator, said that _? Sound travels only in water sound is a wave of air pressure that travels through the atmosphere. Sound needs no medium to travel Sound is noise created by bats 27 / 50 1 kWh is a unit of energy equal to ? 100 joules 1000 kilojoules 1 joule/second 1000 watt-hours 28 / 50 A lens that is thick at the outer edges and thin at the middle is called a ? Convex lens Plane lens Concave lens Biconvex lens 29 / 50 The SI unit of current is the ? Volt Coulomb Ohm Ampere 30 / 50 Alpha rays have high ? Magnetic field Frequency Ionization power Penetrating power 31 / 50 The unit of potential difference is the ? Volt Ampere Ohm Watt 32 / 50 A liquid has a definite volume but not a ? Definite energy Definite shape Definite pressure Definite mass 33 / 50 If the length doubles between a hot and cold body, the heat flux remains ? Constant Halved Doubled Zero 34 / 50 Rate of flow of charge ? Voltage Resistance Current Power 35 / 50 A sound measuring meter, also known as a ? Vibration meter Decibel meter Noise meter Sonic mete 36 / 50 A capacitor that is used to store chemical energy is called an ? Electrolytic capacitor Ceramic capacitor Mica capacitor Paper capacitor 37 / 50 The hydraulic press is an application of _____? Newton’s second law Pascal's law Archimedes' principle Bernoulli's principle 38 / 50 Plastic is a good ? Metal Conductor Insulator Semiconductor 39 / 50 Thermal conductivity of water ? 1.5 W/m·K 0.59 W/m·K 100 W/m·K 14.6 W/m·K 40 / 50 Metals are good conductors due to ? Protons Free electrons Covalent bonds Ionic bonds 41 / 50 The sound intensity of a man is ? 10 Hz 20 Hz 200 Hz 2000 Hz 42 / 50 The restoring force moves a body towards its _______? Maximum amplitude Crest Mean position Node 43 / 50 A concave mirror has a_____? Negative focal length Positive focal length Infinite focal length Zero focal length 44 / 50 Astronomers use radio waves in space instead of sound waves because sound waves do not travel through _________? Space Liquids Atmosphere Gases 45 / 50 Highly penetrating rays are______? Beta rays Ultraviolet rays Gamma rays Alpha rays 46 / 50 Birds fly in air due to ? Their body weight Magnetic pull Wind force only Air current 47 / 50 Balloons fly in the air because they have a_____? Lower density than air Large surface area High temperature Higher pressure 48 / 50 To find the ratio of the speed of light in air to the speed of light in a medium, we use the ? Reflection law Photoelectric effect Refraction law Diffraction law 49 / 50 The speed of a cycle will decrease when moving on a rough surface because of________? Momentum Friction Acceleration Pressure 50 / 50 Thermal conductivity of brass ? 1000 W/m·K 146.87 W/m·K 0.5 W/m·K 15.6 W/m·K Your score is 0% Restart quiz
