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UPSC CSE Prelims Simple Machines & Thermodynamics — Depth Flashcards

Master 10 simple machines & thermodynamics — depth concepts for the UPSC CSE Prelims.

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Question

Consider the following statements regarding Mechanical Advantage (MA):

  1. It is mathematically defined as the ratio of effort applied to the load lifted.
  2. A machine with an MA greater than 1 means the force is multiplied.

Which of the statements given above is/are correct?

Question

Identify the arrangement of components in the three classes of levers.

In a Class 1 lever, the is in the middle (e.g., a seesaw). In a Class 2 lever, the is in the middle (e.g., a wheelbarrow). In a Class 3 lever, the is in the middle (e.g., tongs).

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Mechanics, Heat & Sound12Optics, Electricity & Magnetism12Nuclear & Modern Physics8Electromagnetic Spectrum — Band-wise Applications7Semiconductors, Fiber Optics, Laser & Superconductivity — Applications10

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