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automatic sensor MCQ Questions for Class 9

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3 questions tagged with automatic sensor.

Question 1/3 Hard Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 8

एक छात्र ने रासायनिक अभिक्रिया के समय को हाथ से मापा। परिणामों की विश्वसनीयता बढ़ाने का सर्वोत्तम तरीका क्या है?

A student measured reaction time manually. What is the best way to improve the reliability of the results?

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Correct Answer

B. कई परीक्षण करना और स्वचालित समय संवेदक उपयोग करनाPerform several trials and use an automatic timing sensor

Step 1

Concept

Repetition and automatic timing reduce both random variation and reaction-time error. In exams consider method improvement together with repetition.

Step 2

Why this answer is correct

The correct answer is B. कई परीक्षण करना और स्वचालित समय संवेदक उपयोग करना / Perform several trials and use an automatic timing sensor. Repetition and automatic timing reduce both random variation and reaction-time error. In exams consider method improvement together with repetition.

Step 3

Exam Tip

दोहराव और स्वचालित समय मापन दोनों आकस्मिक तथा प्रतिक्रिया समय त्रुटि कम करते हैं। परीक्षा में विधि सुधार और पुनरावृत्ति साथ देखें।

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Question 2/3 Hard Science Exploration: Entering the World of Secondary Science Hypothesis and experimentation Class 9 Level 8

किस प्रयोगात्मक सुधार से मानव प्रतिक्रिया समय का प्रभाव सबसे अधिक कम होगा?

Which experimental improvement would reduce the effect of human reaction time the most?

Explanation opens after your attempt
Correct Answer

B. स्वचालित संवेदक का उपयोग करनाUse an automatic sensor

Step 1

Concept

An automatic sensor reduces dependence on human reaction time. In exams choose automated measurement for rapid events.

Step 2

Why this answer is correct

The correct answer is B. स्वचालित संवेदक का उपयोग करना / Use an automatic sensor. An automatic sensor reduces dependence on human reaction time. In exams choose automated measurement for rapid events.

Step 3

Exam Tip

स्वचालित संवेदक मानवीय प्रतिक्रिया समय पर निर्भरता कम करता है। परीक्षा में तेज घटनाओं के लिए स्वचालित मापन चुनें।

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Question 3/3 Hard Science Exploration: Entering the World of Secondary Science Scientific questions and observations Class 9 Level 6

किस विधि से मानवीय प्रतिक्रिया समय का प्रभाव सबसे अधिक कम होगा?

Which method would reduce the effect of human reaction time the most?

Explanation opens after your attempt
Correct Answer

C. स्वचालित संवेदक से समय दर्ज करनाRecord time using an automatic sensor

Step 1

Concept

An automatic sensor reduces dependence on human reaction time. In exams consider automated measurement more objective.

Step 2

Why this answer is correct

The correct answer is C. स्वचालित संवेदक से समय दर्ज करना / Record time using an automatic sensor. An automatic sensor reduces dependence on human reaction time. In exams consider automated measurement more objective.

Step 3

Exam Tip

स्वचालित संवेदक मानवीय प्रतिक्रिया समय पर निर्भरता कम करता है। परीक्षा में स्वचालित मापन को अधिक वस्तुनिष्ठ मानें।

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