Concept-wise Practice

product of radicals MCQ Questions for Class 10

product of radicals se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with product of radicals.

कौन-सा विकल्प \(\sqrt{a}\times\sqrt{b}\) को अपरिमेय बनाता है?

Which option makes \(\sqrt{a}\times\sqrt{b}\) irrational?

Explanation opens after your attempt
Correct Answer

D. (a=6,b=15)

Step 1

Concept

\(\sqrt{a}\times\sqrt{b}=\sqrt{ab}\).

Step 2

Why this answer is correct

For (a=6,b=15), (ab=90), which is not a perfect square, so \(\sqrt{90}\) is irrational.

Step 3

Exam Tip

In multiplication, the key check is whether the product inside the root is a perfect square. चरण 1: \(\sqrt{a}\times\sqrt{b}=\sqrt{ab}\) होता है। चरण 2: (a=6,b=15) पर (ab=90), जो पूर्ण वर्ग नहीं है, इसलिए \(\sqrt{90}\) अपरिमेय है। चरण 3: गुणन में अंदर का गुणनफल पूर्ण वर्ग है या नहीं, यह मुख्य जाँच है।

Open Question Page
Ask Friends