यदि परिकल्पना है कि सतह का क्षेत्रफल वाष्पीकरण को प्रभावित करता है तो क्या बदला जाएगा?
If the hypothesis states that surface area affects evaporation what should be changed?
Explanation opens after your attempt
A. द्रव का खुला सतह क्षेत्रफलExposed surface area of the liquid
Concept
The exposed surface area is the independent variable that is deliberately changed. In exams identify the causal variable in the hypothesis.
Why this answer is correct
The correct answer is A. द्रव का खुला सतह क्षेत्रफल / Exposed surface area of the liquid. The exposed surface area is the independent variable that is deliberately changed. In exams identify the causal variable in the hypothesis.
Exam Tip
खुला सतह क्षेत्रफल स्वतंत्र चर होगा जिसे जानबूझकर बदला जाएगा। परीक्षा में परिकल्पना के कारण वाले चर को पहचानें।
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