The instrument used to record seismic waves is MCQ with Answer and Explanation

Explanation:
For resistors in parallel, the reciprocal of the equivalent resistance (1/Rp) is the sum of the reciprocals of individual resistances. 1/Rp = 1/R1 + 1/R2 + 1/R3 = 1/2 + 1/3 + 1/6. Finding a common denominator (6): 1/Rp = 3/6 + 2/6 + 1/6 = 6/6 = 1. Therefore, Rp = 1 Ω.

Explanation:
v = u + at, linear relation, slope = a. Straight line inclined. If a=0, parallel to time axis (uniform velocity). Displacement-time is parabola for uniform acceleration.

Explanation:
Fusion: light nuclei (e.g., hydrogen) combine to form heavier nucleus (helium), releasing energy (stars, H-bomb). Fission splits heavy nuclei (U, Pu). Memory tip: 'Fusion = joining light; Fission = splitting heavy'. Nuclear reaction concept frequently tested in competitive modern physics sections.