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Illustrate the term semiconductor laser. Semiconductor Laser (Laser diode): It is a laser wherein semiconductors (characteristically direct band-gap semiconductors) can be u
Q. Define: optic axis of a crystal. In a double refracting crystal there is a particular direction in which both the rays travel with same velocity. This direction is called a
The force between two magnetic poles divided by a distance ‘d' in air is ‘F'. At what distance between them the force becomes doubled?
Hooke's law (R. Hooke): The stress applied on any solid is proportional to the strain it generates in the elastic limit for that solid. The constant of that proportionality is
The loudness of sound depends on: Amplitude of vibration. Area of vibrating body. Distance from the sounding body. Density of the medium.
Sliding friction Lock the rollers of a roller skate by criss-crossing rubber bands more than them on both sides. Place the roller skate on a sloping board and reminder how the
Alternating Current: (AC) Such a current can be obtained if a resistor is linked in series with a source of alternating voltage. This current alters its direction so many times
What are the demerits of the typical ultrasonic flaw detector? Demerits of a typical ultrasonic flaw detector: a. Both the sides of the specimen are needed for the study.
ratio of specific heats of polyatomic gas
What is resultant force
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