यदि एक प्रयोग में प्रकाश और पानी दोनों बदल दिए जाएँ तो क्या समस्या होगी?
What problem occurs if both light and water are changed in one experiment?
Explanation opens after your attempt
D. परिणाम का सही कारण पता नहीं चलेगाThe true cause of the result will not be known
Concept
When two factors change it becomes difficult to know which caused the result. In exams change only one independent variable.
Why this answer is correct
The correct answer is D. परिणाम का सही कारण पता नहीं चलेगा / The true cause of the result will not be known. When two factors change it becomes difficult to know which caused the result. In exams change only one independent variable.
Exam Tip
दो कारक बदलने पर यह तय करना कठिन होता है कि परिणाम किसके कारण आया। परीक्षा में केवल एक स्वतंत्र चर बदलें।
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