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Electromagnetic waves are transverse waves; that means magnetic vector and electric vector, propagation vector are perpendicular to each other. Prove the statement mathematically.
Water at 10 Celsius flows at uniform velocity of 0.1 m/sec into a parallel plate channel, which is wide in the third direction. The parallel plates are at 20 Celsius and are 1.0 cm
A cylindrical metallic wire is stretched to enhance its length by 5%. Measure the percentage change in its resistance.
A converging thin lens has a focal length of 27 centimetres. An object is placed 9 centimetres from the lens. Where is the image of this object formed? Ans: The images of g
According to their frequencies, waves are separated into three categories: (1) Audible or sound waves : Range 20 Hz to 20 KHz. These are formed by vibrating bodies like as voc
Radiation Hazards: 1. They can injure our body cells. 2. Excessive radiation might be cause cancer. 3. Energetic radiation penetrates inside the body and can cause other
In the case of orientation polarization we have material with built _in dipoles that are independent of each other, i.e. they can rotate liberally in sharp distinction with ionic p
If the current in a wire of a CD player is 14.0 mA, how long would it take for 1.90 C of charge to pass a point in this wire? Answer in units of s
The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: a) 0.312 grams b) 0.625 grams c) 1.25 g
Describe the construction of optical fiber. Explain the principle of propagation of light waves within a fiber. Define acceptance angle and acceptance. How optical fibers can be u
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