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bulb-type MCQ Questions for Class 9

bulb-type se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with bulb-type.

Question 1/2 Medium Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 12

वोल्टेज और बल्ब की चमक वाले प्रयोग में बल्ब का प्रकार समान रखना क्यों जरूरी है?

Why is it necessary to keep the bulb type the same in an experiment on voltage and brightness?

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Correct Answer

B. क्योंकि अलग बल्ब अलग चमक दे सकते हैंBecause different bulbs may produce different brightness

Step 1

Concept

Different bulbs may have different ratings so the same bulb should be used. In exams treat apparatus as a controlled variable.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि अलग बल्ब अलग चमक दे सकते हैं / Because different bulbs may produce different brightness. Different bulbs may have different ratings so the same bulb should be used. In exams treat apparatus as a controlled variable.

Step 3

Exam Tip

अलग बल्बों की क्षमता अलग हो सकती है इसलिए वही बल्ब उपयोग करना चाहिए। परीक्षा में उपकरण को नियंत्रित चर मानें।

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Question 2/2 Easy Science Exploration: Entering the World of Secondary Science Variables in an experiment Class 9 Level 12

बल्ब की चमक वाले प्रयोग में एक ही प्रकार का बल्ब उपयोग करना क्या है?

In a bulb brightness experiment what is using the same type of bulb?

Explanation opens after your attempt
Correct Answer

D. नियंत्रित चरControlled variable

Step 1

Concept

Keeping the bulb type the same ensures that only battery number is tested. In exams treat it as a controlled variable.

Step 2

Why this answer is correct

The correct answer is D. नियंत्रित चर / Controlled variable. Keeping the bulb type the same ensures that only battery number is tested. In exams treat it as a controlled variable.

Step 3

Exam Tip

बल्ब का प्रकार समान रखने से केवल बैटरियों की संख्या का प्रभाव जाँचा जाता है। परीक्षा में इसे नियंत्रित चर मानें।

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