The correct answer is chemical sedimentary rock
These Chemical sedimentary rock are formed due to supersaturation of mineral constituent resulting in precipitation of them.
This is a kind of sedimentary rock which is most likely to be formed in a cave.
Answer:
As the amplitude of pendulum motion increases, the period lengthens, because the restoring force −mgsinθ increases more slowly than −mgθ (sinθ≅θ−θ3/3!for small angles).