Assertion (A): Passing light through a rectangular glass slab produces no visible dispersion. Reason (R): Dispersion is the splitting of white light into its constituent colours. Which is correct?

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1. Assertion (A): Passing light through a rectangular glass slab produces no visible dispersion. Reason (R): Dispersion is the splitting of white light into its constituent colours. Which is correct?

Both A and R are true, and R correctly explains A

Both A and R are true, but R does not correctly explain A

A is true, but R is false

A is false, but R is true

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A slab’s two parallel faces let the separated colours recombine as they exit, hiding the dispersion. R is a true definition of dispersion in general, but it doesn’t explain why a slab specifically shows none.