In SHM, the restoring force is proportional to MCQ with Answer and Explanation

Explanation:
Gamma rays are photons, electromagnetic waves with wavelengths shorter than X-rays, produced in nuclear transitions. No mass, no charge. Highly penetrating. Stopped by thick lead.

Explanation:
v² = 2gh = 2×10×20=400, v=20 m/s.

Explanation:
Fundamental units: kg, m, s, A, K, mol, cd. Newton is derived (kg m/s²). Therefore, Newton is not fundamental. Remember the seven base units.