Question

Assertion (A): On the seventh or eighth day of every fortnight a neap tide, which is lower in height than a low tide, occurs.

Reason (R): The tide producing forces of the sun and the moon work in opposite direction causing a low tide.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and Rare true but R does not explain A.

• A is true but R is false.

• A is false but R is true.

Answer 1

A is false but R is true.

Explanation:

• Assertion (A): “On the seventh or eighth day of every fortnight a neap tide, which is lower in height than a low tide, occurs.”
  False – Neap tides are lower than normal high tides, not lower than low tides. Also, neap tides are not lower than low tides—they result in lesser tidal range (i.e., lower high tides and higher low tides).

• Reason (R): “The tide-producing forces of the Sun and the Moon work in opposite direction causing a low tide.”
  True – During neap tides, which occur around the first and third quarters of the moon, the Sun and Moon are at right angles to each other. Their gravitational pulls partially cancel each other out, reducing the tidal range.