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Question Easy Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 11

किस चर के मान को प्रयोगकर्ता स्वयं तय करता है?

Which variable is set by the experimenter?

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Correct Answer

D. स्वतंत्र चरIndependent variable

Step 1

Concept

The experimenter sets different values of the independent variable. Its effect is then measured.

Step 2

Why this answer is correct

The correct answer is D. स्वतंत्र चर / Independent variable. The experimenter sets different values of the independent variable. Its effect is then measured.

Step 3

Exam Tip

प्रयोगकर्ता स्वतंत्र चर के अलग मान तय करता है। फिर उसका प्रभाव मापा जाता है।

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Question Expert Science Exploration: Entering the World of Secondary Science Nature and meaning of science Class 9 Level 1

एक ही परिणाम कई बार उसी प्रयोगकर्ता को मिला लेकिन अन्य समूह उसे प्राप्त नहीं कर सके। कौन सा गुण मौजूद है पर दूसरा संदिग्ध है?

The same result was obtained repeatedly by the same experimenter but not by other groups. Which quality is present while another is doubtful?

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Correct Answer

B. पुनरावृत्तता मौजूद है और पुनरुत्पादकता संदिग्ध हैRepeatability is present and reproducibility is doubtful

Step 1

Concept

Repetition by the same experimenter shows repeatability while failure by other groups questions reproducibility. Distinguish the terms.

Step 2

Why this answer is correct

The correct answer is B. पुनरावृत्तता मौजूद है और पुनरुत्पादकता संदिग्ध है / Repeatability is present and reproducibility is doubtful. Repetition by the same experimenter shows repeatability while failure by other groups questions reproducibility. Distinguish the terms.

Step 3

Exam Tip

एक ही व्यक्ति द्वारा परिणाम दोहरना पुनरावृत्तता है जबकि अन्य समूहों द्वारा न दोहरा पाना पुनरुत्पादकता पर प्रश्न उठाता है। परीक्षा में दोनों शब्द अलग रखें।

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