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