Weight of 10 kg mass on Moon (g_moon ≈ g_earth/6) is: MCQ with Answer and Explanation
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Question #1
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Which basic thermodynamic law establishes the physical concept of temperature and is the foundational basis for constructing thermometers?
Correct Answer: Option A
Explanation:
The Zeroth Law of Thermodynamics states that if body A is in thermal equilibrium with body B, and body B is in thermal equilibrium with body C, then A is also in thermal equilibrium with C. This transitive property implies a common physical property shared by them all, which we define as 'temperature'. A thermometer acts as body B.
The Zeroth Law of Thermodynamics states that if body A is in thermal equilibrium with body B, and body B is in thermal equilibrium with body C, then A is also in thermal equilibrium with C. This transitive property implies a common physical property shared by them all, which we define as 'temperature'. A thermometer acts as body B.
Question #2
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A fuse wire is made of an alloy of tin and lead because it has
Question #3
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Which SI prefix represents 10⁻⁶?
Correct Answer: Option A
Explanation:
Micro (μ) denotes 10⁻⁶ in SI system. Nano = 10⁻⁹, pico = 10⁻¹², milli = 10⁻³. Standard prefixes: kilo(10³), milli(10⁻³), micro(10⁻⁶), nano(10⁻⁹). Memory aid: 'Micro = millionth; μm = micrometer = 10⁻⁶ m'. Frequently tested for unit conversion proficiency in competitive exams.
Micro (μ) denotes 10⁻⁶ in SI system. Nano = 10⁻⁹, pico = 10⁻¹², milli = 10⁻³. Standard prefixes: kilo(10³), milli(10⁻³), micro(10⁻⁶), nano(10⁻⁹). Memory aid: 'Micro = millionth; μm = micrometer = 10⁻⁶ m'. Frequently tested for unit conversion proficiency in competitive exams.
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