In simple harmonic motion, acceleration is directly proportional to
A. Square of displacement
B. Velocity
C. Displacement but opposite in direction
D. Time
Answer: Option C
Solution (By JKSSB Mock Tests)
In SHM, a = -ω²x, acceleration ∝ -displacement. Minus sign indicates direction towards mean position (restoring). Characteristic of SHM. Pendulum and spring-mass system exhibit SHM for small displacements.
Explanation:
Dispersion happens because refractive index varies with wavelength. Prism, rainbow. Scattering is Tyndall effect (blue sky). Polarisation restricts vibrations.
No comments yet. Be the first to start the discussion!