Question 211
How much work is done when a force of 10 N moves an object 3 m in the direction of the force?MechanicsWork and Energyeasy
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Question 212
A photon has energy of 3.3 × 10^-19 J. What is its frequency? (Planck's constant h = 6.6 × 10^-34 J·s)Modern physicsQuantum Physicshard
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Question 213
Which of the following instruments is used to measure temperature?MeasurementsMeasurement and Unitseasy
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Question 214
A wave has a frequency of 50 Hz and a wavelength of 4 m. What is the speed of the wave?WavesWave Motionmedium
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Question 215
Which of the following best describes the principle of conservation of momentum?MechanicsMechanicsmedium
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Question 216
What causes the bending of light when it passes from air into water?WavesWave Motionmedium
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Question 217
Which statement about magnetic field lines is correct?MagnetismMagnetismmedium
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Question 218
In a circuit, if the resistance is doubled and the voltage remains constant, how does the current change?ElectricityElectricity and Magnetismmedium
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Question 219
What is the energy change when a gamma ray photon is emitted from a nucleus?Modern PhysicsRadioactivity and Nuclear Physicshard
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Question 220
A metal rod is heated and its length increases. Which property of the metal does this demonstrate?HeatThermal Properties of Matterhard
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