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rolling ball MCQ Questions for Class 9

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2 questions tagged with rolling ball.

Question 1/2 Medium Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 7

यदि छात्र यह जाँचता है कि सतह का प्रकार गेंद की लुढ़कने की दूरी को प्रभावित करता है तो स्वतंत्र चर क्या है?

If a student investigates whether surface type affects the distance travelled by a rolling ball what is the independent variable?

Explanation opens after your attempt
Correct Answer

A. सतह का प्रकारType of surface

Step 1

Concept

The deliberately changed surface type is the independent variable. In exams identify the changed factor.

Step 2

Why this answer is correct

The correct answer is A. सतह का प्रकार / Type of surface. The deliberately changed surface type is the independent variable. In exams identify the changed factor.

Step 3

Exam Tip

जानबूझकर बदला गया सतह का प्रकार स्वतंत्र चर है। परीक्षा में बदले गए कारक को पहचानें।

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Question 2/2 Medium Science Exploration: Entering the World of Secondary Science Scientific questions and observations Class 9 Level 6

एक छात्र का प्रश्न है कि अलग-अलग सतहों पर गेंद कितनी दूर लुढ़कती है। इसमें आश्रित चर क्या है?

A student's question asks how far a ball rolls on different surfaces. What is the dependent variable?

Explanation opens after your attempt
Correct Answer

D. गेंद द्वारा तय की गई दूरीDistance travelled by the ball

Step 1

Concept

The distance travelled is the measured response and is therefore the dependent variable. In exams choose the value measured as the outcome.

Step 2

Why this answer is correct

The correct answer is D. गेंद द्वारा तय की गई दूरी / Distance travelled by the ball. The distance travelled is the measured response and is therefore the dependent variable. In exams choose the value measured as the outcome.

Step 3

Exam Tip

तय की गई दूरी मापी जाने वाली प्रतिक्रिया है इसलिए यह आश्रित चर है। परीक्षा में परिणाम के रूप में मापे गए मान को चुनें।

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