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laser MCQ Questions for Class 9

laser 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 laser.

Question 1/2 Expert Artificial Intelligence ICT (Information & Communication Technology) Skills-I Basic components of a computer system Class 9 Level 36

प्रकाशीय डिस्क में डेटा पढ़ने का मुख्य आधार क्या है?

What is the main basis for reading data from an optical disc?

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Correct Answer

D. लेजर प्रकाश का परावर्तनReflection of laser light

Step 1

Concept

An optical drive reads data from differences in laser reflection. Compact discs and DVDs are examples.

Step 2

Why this answer is correct

The correct answer is D. लेजर प्रकाश का परावर्तन / Reflection of laser light. An optical drive reads data from differences in laser reflection. Compact discs and DVDs are examples.

Step 3

Exam Tip

प्रकाशीय ड्राइव लेजर के परावर्तन में अंतर से डेटा पढ़ती है। कॉम्पैक्ट डिस्क और डीवीडी इसके उदाहरण हैं।

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Question 2/2 Hard Artificial Intelligence ICT (Information & Communication Technology) Skills-I Basic components of a computer system Class 9 Level 36

प्रकाशीय ड्राइव डिस्क को किस सिद्धांत से पढ़ती है?

By what principle does an optical drive read a disc?

Explanation opens after your attempt
Correct Answer

B. प्रकाश या लेजर के परावर्तन सेThrough reflection of light or laser

Step 1

Concept

An optical drive reads the disc surface using laser light. Distinguish optical and magnetic storage in exams.

Step 2

Why this answer is correct

The correct answer is B. प्रकाश या लेजर के परावर्तन से / Through reflection of light or laser. An optical drive reads the disc surface using laser light. Distinguish optical and magnetic storage in exams.

Step 3

Exam Tip

प्रकाशीय ड्राइव लेजर प्रकाश से डिस्क की सतह पढ़ती है। परीक्षा में प्रकाशीय और चुंबकीय भंडारण अलग करें।

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