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Why the pressure increases when temperature increases
The kinetic energy of the molecules increases, and more frequent collisions.
Define potential energy, state its equation.
Energy possessed due to height - mgh
Define kinetic energy, write its equation.
Energy possessed due to motion, Kinetic energy = ½mv2
Define Dispersion
splitting of white light (red being longer wavelength deviates least and violet deviates most)
Conditions for total internal reflection
Light should be traveling from denser to rarer medium, angle of incidence must be greater than critical angle
Condition for maximum diffraction
For maximum diffraction, the wavelength must be equal to the gap size.
Refractive Index
n = sin i/sin r (Snell’s law), n = v1/v2 ,n = c/v, n = 1/sin C
Properties of image formed by plane mirror
Same size, laterally inverted, virtual
Law of reflection
Angle of incidence is equal to angle of reflection.
Wave equation
wave speed = frequency x wavelength
Principle of moments
clockwise moment = anticlockwise moments
Define moment of a force
It is the product of force and perpendicular distance.
Define impulse
Impulse = Force x time, Impulse = change in momentum (mv - mu)
Law of conservation of momentum
the total momentum before collision = total momentum after collision.
Define momentum
Momentum is the product of mass and velocity (m x v) unit - kgm/s
Differentiate between longitudinal and transverse wave
In longitudinal waves, the vibrations are parallel to the direction of wave travel. transverse waves,the vibrations are at right angles to the direction of wave
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