Concept-wise Practice

discriminant sign MCQ Questions for Class 10

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

Practice Questions

2 questions tagged with discriminant sign.

Question 1/2 Easy Mathematics Quadratic Equations Nature of Roots Class 10 Level 37

यदि (D=-7) हो तो मूलों की प्रकृति क्या होगी?

If (D=-7), what will be the nature of roots?

Explanation opens after your attempt
Correct Answer

A. वास्तविक मूल नहींno real roots

Step 1

Concept

(-7<0), so there will be no real roots. Never treat negative (D) as equal roots.

Step 2

Why this answer is correct

The correct answer is A. वास्तविक मूल नहीं / no real roots. (-7<0), so there will be no real roots. Never treat negative (D) as equal roots.

Step 3

Exam Tip

(-7<0) है, इसलिए वास्तविक मूल नहीं होंगे। ऋणात्मक (D) को कभी समान मूल न मानें।

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Question 2/2 Easy Mathematics Quadratic Equations Nature of Roots Class 10 Level 37

यदि (D=25) हो तो द्विघात समीकरण के मूलों के बारे में सही बात क्या है?

If (D=25), which statement about the roots of a quadratic equation is correct?

Explanation opens after your attempt
Correct Answer

A. मूल वास्तविक और असमान होंगेroots will be real and distinct

Step 1

Concept

(25>0), so the roots will be real and distinct. The sign of (D) is enough for nature.

Step 2

Why this answer is correct

The correct answer is A. मूल वास्तविक और असमान होंगे / roots will be real and distinct. (25>0), so the roots will be real and distinct. The sign of (D) is enough for nature.

Step 3

Exam Tip

(25>0) है, इसलिए मूल वास्तविक और असमान होंगे। (D) का केवल चिन्ह प्रकृति बताने के लिए काफी है।

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