यदि छात्र प्रकाश का प्रभाव जांच रहा है तो कौन सा कारक बदलना चाहिए?
If a student is testing the effect of light which factor should be changed?
Explanation opens after your attempt
B. प्रकाश की अवधिDuration of light
Concept
To study the effect of light its duration or amount is changed. Other factors should be kept the same.
Why this answer is correct
The correct answer is B. प्रकाश की अवधि / Duration of light. To study the effect of light its duration or amount is changed. Other factors should be kept the same.
Exam Tip
प्रकाश का प्रभाव जानने के लिए प्रकाश की अवधि या मात्रा बदली जाती है। अन्य कारक समान रखने चाहिए।
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