D. मापा गया समय नियंत्रित चर/Measured time as controlled variable
Step 1
Concept
Measured time is a dependent variable rather than a controlled variable. Identify the quantity measured as the outcome.
Step 2
Why this answer is correct
The correct answer is D. मापा गया समय नियंत्रित चर / Measured time as controlled variable. Measured time is a dependent variable rather than a controlled variable. Identify the quantity measured as the outcome.
Step 3
Exam Tip
मापा गया समय आश्रित चर होता है न कि नियंत्रित चर। परिणाम के रूप में मापी गई राशि पहचानें।
A. पानी का तापमान नमक के घुलने के समय को कैसे प्रभावित करता है/How does water temperature affect the time taken for salt to dissolve
Step 1
Concept
In this question water temperature is changed. Therefore it is the independent variable.
Step 2
Why this answer is correct
The correct answer is A. पानी का तापमान नमक के घुलने के समय को कैसे प्रभावित करता है / How does water temperature affect the time taken for salt to dissolve. In this question water temperature is changed. Therefore it is the independent variable.
Step 3
Exam Tip
इस प्रश्न में पानी का तापमान बदला जाता है। इसलिए यह स्वतंत्र चर है।
B. अलग तापमान पर पानी को वाष्पित होने में कितना समय लगता है/How long does water take to evaporate at different temperatures
Step 1
Concept
The time taken for evaporation is measured. Therefore it is the dependent variable.
Step 2
Why this answer is correct
The correct answer is B. अलग तापमान पर पानी को वाष्पित होने में कितना समय लगता है / How long does water take to evaporate at different temperatures. The time taken for evaporation is measured. Therefore it is the dependent variable.
Step 3
Exam Tip
वाष्पीकरण में लगा समय मापा जाता है। इसलिए यह आश्रित चर है।
D. परिणाम की सही व्याख्या कठिन होगी/Correct interpretation of the result will be difficult
Step 1
Concept
Uncontrolled factors may also affect the result. This makes it difficult to identify the correct cause.
Step 2
Why this answer is correct
The correct answer is D. परिणाम की सही व्याख्या कठिन होगी / Correct interpretation of the result will be difficult. Uncontrolled factors may also affect the result. This makes it difficult to identify the correct cause.
Step 3
Exam Tip
अनियंत्रित कारक भी परिणाम को प्रभावित कर सकते हैं। इसलिए सही कारण पहचानना कठिन हो जाता है।
A. क्या बदला क्या मापा और क्या समान रखा गया/What was changed what was measured and what was kept the same
Step 1
Concept
To identify variables look for the factor changed measured and kept the same. These are the three main roles.
Step 2
Why this answer is correct
The correct answer is A. क्या बदला क्या मापा और क्या समान रखा गया / What was changed what was measured and what was kept the same. To identify variables look for the factor changed measured and kept the same. These are the three main roles.
Step 3
Exam Tip
चर पहचानने के लिए बदला गया मापा गया और समान रखा गया कारक खोजें। यही तीन मुख्य भूमिकाएं हैं।
A. स्वतंत्र चर बदला जाता है आश्रित चर मापा जाता है और नियंत्रित चर समान रखे जाते हैं/The independent variable is changed the dependent variable is measured and controlled variables are kept the same
Step 1
Concept
The independent variable is changed as the cause and the dependent variable is measured as the outcome. Controlled variables maintain fairness.
Step 2
Why this answer is correct
The correct answer is A. स्वतंत्र चर बदला जाता है आश्रित चर मापा जाता है और नियंत्रित चर समान रखे जाते हैं / The independent variable is changed the dependent variable is measured and controlled variables are kept the same. The independent variable is changed as the cause and the dependent variable is measured as the outcome. Controlled variables maintain fairness.
Step 3
Exam Tip
स्वतंत्र चर कारण के रूप में बदला जाता है और आश्रित चर परिणाम के रूप में मापा जाता है। नियंत्रित चर निष्पक्षता बनाए रखते हैं।
The amount of water evaporated is the measured outcome. Therefore it is the dependent variable.
Step 2
Why this answer is correct
The correct answer is B. आश्रित चर / Dependent variable. The amount of water evaporated is the measured outcome. Therefore it is the dependent variable.
Step 3
Exam Tip
वाष्पित पानी की मात्रा मापा गया परिणाम है। इसलिए यह आश्रित चर है।
Keeping temperature the same in all groups isolates the effect of sound intensity. Temperature is a controlled variable here.
Step 2
Why this answer is correct
The correct answer is D. सभी समूहों में समान / The same in all groups. Keeping temperature the same in all groups isolates the effect of sound intensity. Temperature is a controlled variable here.
Step 3
Exam Tip
तापमान सभी समूहों में समान रखने से केवल ध्वनि की तीव्रता का प्रभाव देखा जाएगा। तापमान यहां नियंत्रित चर है।
