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Physics

What enables us to write on the black board with chalk.?

A. Gravity B. Cohesion C. Adhesion D. Viscosity

and why?

Note by Akash Sinha
4 years, 3 months ago

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Adhesion, the chalk sticks to the black board because of that.

Lokesh Sharma - 4 years, 3 months ago

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thanks for it.

Akash Sinha - 4 years, 3 months ago

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why Viscosity is one of the options ???

Rushi Rokad - 4 years, 3 months ago

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ok forget it but tell me the write one

Akash Sinha - 4 years, 3 months ago

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