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More Physics GS Questions
- Which law of thermodynamics states that energy cannot be created or destroyed?
- A ray of light travels from glass (n=1.5) to air (n=1). For which angle of incidence will the ray just graze the surface (total internal reflection limit)?
- An example of longitudinal waves (in a gas medium) is:
- Two amplifiers are connected one after the other in series (cascaded). The first amplifier has a voltage gain of 12 and the second has a voltage gain of 15...
- Charges +q and –q are placed at (–d, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?
- Which of the following is the energy quantum of radiation?
- Newton's rings can be obtained in:
- The refractive index of glass is 1.5. What is the speed of light in glass? (Speed of light in vacuum is 3.0 ×108 m s-1)
- What is the potential difference across a 5 Ω resistor when a current of 2 A flows through it?
- What is the speed of sound in air at room temperature (20°C)?
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