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Momentum is always conserved in absence of external forces. Kinetic energy converts to heat or deformation during inelastic collisions, unlike elastic ones.
Air flows faster over the curved top surface, creating lower pressure. Higher pressure below pushes upward, generating net lift.
Diverging rays after reflection appear to come from a point behind the mirror. Image is erect, smaller, and located between pole and focus.
Total internal reflection occurs when light travels from denser to rarer medium at an angle of incidence greater than the critical angle.
Lenz’s law states induced current opposes the change in flux, ensuring work done to move magnet converts into electrical energy, conserving total energy.
In transverse waves (light), particles oscillate perpendicular to wave direction. In longitudinal waves (sound), oscillations are parallel, creating compressions and rarefactions.
Alternating electric field in a dee gap accelerates particles while perpendicular magnetic field bends them into semicircular paths of increasing radius.
Light enters fibre core at an angle above critical angle. Repeated total internal reflections at core-cladding interface guide light along fibre with minimal loss.
Rayleigh scattering of sunlight by air molecules is stronger for shorter (blue) wavelengths. At sunset, longer path scatters blue away, transmitting red.
Time period depends only on length and acceleration due to gravity (T = 2π√(L/g)), independent of mass or amplitude for small oscillations.
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Momentum is always conserved in absence of external forces. Kinetic energy converts to heat or deformation during inelastic collisions, unlike elastic ones.
Air flows faster over the curved top surface, creating lower pressure. Higher pressure below pushes upward, generating net lift.
Diverging rays after reflection appear to come from a point behind the mirror. Image is erect, smaller, and located between pole and focus.
Total internal reflection occurs when light travels from denser to rarer medium at an angle of incidence greater than the critical angle.
Lenz’s law states induced current opposes the change in flux, ensuring work done to move magnet converts into electrical energy, conserving total energy.
In transverse waves (light), particles oscillate perpendicular to wave direction. In longitudinal waves (sound), oscillations are parallel, creating compressions and rarefactions.
Alternating electric field in a dee gap accelerates particles while perpendicular magnetic field bends them into semicircular paths of increasing radius.
Light enters fibre core at an angle above critical angle. Repeated total internal reflections at core-cladding interface guide light along fibre with minimal loss.
Rayleigh scattering of sunlight by air molecules is stronger for shorter (blue) wavelengths. At sunset, longer path scatters blue away, transmitting red.
Time period depends only on length and acceleration due to gravity (T = 2π√(L/g)), independent of mass or amplitude for small oscillations.
