Use of fine powder on caromboard _____ friction.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Context**: The question asks about the effect of using fine powder on a carom board. Carom is a game played on a smooth board where players use a striker to hit pieces into pockets.

2. **Identifying the Role of Fine Powder**: The fine powder is applied to the surface of the carom board. The purpose of this powder is to enhance the playing experience.

3. **Effect on Friction**: When fine powder is sprinkled on the carom board, it creates a smoother surface. This increased smoothness leads to a reduction in the friction between the striker and the board.

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