Q. The bob of a simple pendulum should be

एक साधारण लोलक का बॉब होना चाहिए

A
Heavy and small
भारी और छोटा
B
Heavy and large
भारी और बड़ा
C
Non-metallic
गैर धात्विक
D
Plastic
प्लास्टिक

Explanation

The bob should be dense (heavy) to minimize air resistance.
A small size ensures minimal effect from air drag and ensures the string behaves ideally.
So, ideally: small, heavy, spherical bob (often made of metal like brass or lead).

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