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Q. State Fleming's left hand rule.
Fleming's Left Hand Rule.
The forefinger the middle finger as well as the thumb of the left hand are stretched in mutually perpendicular directions. If the forefinger points in the path of the magnetic field the middle finger points in the direction of the current then the thumb points in the direction of the force on the conductor.
What do you understand by reverberation? Who is the founder of architectural acoustics? What is Newton's formula for velocity of sound in a gas? How is it corrected by Laplace?
Interference of waves: When two waves of similar amplitude and period traveling in the similar medium superpose, they reinforce each other at one point and cancel at others. Th
A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 1
Describe an echo. What is the minimum distance needed to form an echo. Write its application.
Write an expression for the force experienced by a charged particle moving in a uniform magnetic field B. With the help of a diagram, define the principle and working of a, cyclotr
A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma
A sky diver in free fall reaches a speed of 65.2 m/s when she opens her parachute. The parachute quickly slows her down to 7.30 m/s at a constant rate of 29.4 m/s 2 . During th
A piece of flint glass is lying on top of a container of water (see figure below). When a red beam of light in air is incident upon the flint glass at an angle of 28°. What i
The rate of change of angular velocity with related to time is known as angular acceleration.
suppose you are running and want to stop at once. surely you will have to produce negative acceleration in your speed. can you tell from where does the necessary force come ?
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