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"If b² - 4ac < 0, then roots of ax² + bx + c = 0 are" Multiple Choice Questions (MCQ) on physics for class 10 with choices equal, irrational, rational, and imaginary for distance learning classes. Practice roots of quadratic equations quiz questions for online certificate programs for online classes.

MCQ: If b² - 4ac < 0, then roots of ax² + bx + c = 0 are

1. equal
2. irrational
3. rational
4. imaginary

D

MCQ: If b² - 4ac = 0, then roots of ax² + bx + c = 0 are

1. equal
2. imaginary
3. irrational
4. rational

A

MCQ: If b² - 4ac > 0, and not a perfect square then roots of ax² + bx + c = 0 are

1. imaginary
2. rational
3. equal
4. irrational

D

MCQ: If b² - 4ac > 0, then roots of ax² + bx + c = 0 are

1. irrational
2. real
3. equal
4. rational

B

MCQ: Nature of the roots depends on the value of b² - 4ac is known as

1. discriminant
2. square root