ध्वनि के प्रभाव की जांच में कौन सा कारक नियंत्रित रखना उचित है?
Which factor is appropriate to control while testing the effect of sound?
Explanation opens after your attempt
C. प्रकाश की अवधिDuration of light
Concept
Light also affects plant growth. Therefore all groups should receive the same duration of light.
Why this answer is correct
The correct answer is C. प्रकाश की अवधि / Duration of light. Light also affects plant growth. Therefore all groups should receive the same duration of light.
Exam Tip
प्रकाश भी पौधे की वृद्धि को प्रभावित करता है। इसलिए सभी समूहों को समान प्रकाश मिलना चाहिए।
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