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lights MCQ Questions for Class 10

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

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5 questions tagged with lights.

Question 1/5 Expert Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 72

एक त्योहार सजावट में पहले द्वार पर (90) लाइटें हैं और हर अगले द्वार पर (25) लाइटें अधिक हैं। (10) द्वारों पर कुल कितनी लाइटें होंगी?

In a festival decoration the first gate has (90) lights and each next gate has (25) more lights. How many lights are there on (10) gates?

Explanation opens after your attempt
Correct Answer

A. (2025)

Step 1

Concept

The light numbers are \(90,115,140,\ldots\) and \(S_{10}=2025\). Exam tip: treat each gate as one term.

Step 2

Why this answer is correct

The correct answer is A. (2025). The light numbers are \(90,115,140,\ldots\) and \(S_{10}=2025\). Exam tip: treat each gate as one term.

Step 3

Exam Tip

लाइटों की संख्या \(90,115,140,\ldots\) है और \(S_{10}=2025\)। परीक्षा में प्रत्येक द्वार को एक पद मानें।

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Question 2/5 Expert Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 71

एक त्योहार सजावट में पहले गेट पर (80) लाइटें हैं और हर अगले गेट पर (20) लाइटें अधिक हैं। (9) गेटों पर कुल कितनी लाइटें होंगी?

In a festival decoration the first gate has (80) lights and each next gate has (20) more lights. How many lights are there on (9) gates?

Explanation opens after your attempt
Correct Answer

C. (1440)

Step 1

Concept

The light numbers are \(80,100,120,\ldots\) and \(S_9=1440\). Exam tip: treat each gate as one term.

Step 2

Why this answer is correct

The correct answer is C. (1440). The light numbers are \(80,100,120,\ldots\) and \(S_9=1440\). Exam tip: treat each gate as one term.

Step 3

Exam Tip

लाइटों की संख्या \(80,100,120,\ldots\) है और \(S_9=1440\)। परीक्षा में प्रत्येक गेट को एक पद मानें।

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Question 3/5 Expert Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 70

एक मंच सजावट में पहली पंक्ति में (96) लाइटें हैं और हर अगली पंक्ति में (4) लाइटें कम हैं। (18) पंक्तियों में कुल कितनी लाइटें होंगी?

In a stage decoration the first row has (96) lights and each next row has (4) fewer lights. How many lights are there in (18) rows?

Explanation opens after your attempt
Correct Answer

C. (1116)

Step 1

Concept

The lights form the decreasing AP \(96,92,88,\ldots\) and \(S_{18}=1116\). Exam tip: in decreasing rows the common difference is negative.

Step 2

Why this answer is correct

The correct answer is C. (1116). The lights form the decreasing AP \(96,92,88,\ldots\) and \(S_{18}=1116\). Exam tip: in decreasing rows the common difference is negative.

Step 3

Exam Tip

लाइटें \(96,92,88,\ldots\) घटती समान्तर श्रेणी हैं और \(S_{18}=1116\)। परीक्षा में घटती पंक्ति में सार्व अंतर ऋणात्मक होता है।

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Question 4/5 Hard Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 72

एक त्योहार सजावट में पहले गेट पर (60) लाइटें हैं और हर अगले गेट पर (15) लाइटें अधिक हैं। (8) गेटों पर कुल कितनी लाइटें होंगी?

In a festival decoration the first gate has (60) lights and each next gate has (15) more lights. How many lights are there on (8) gates?

Explanation opens after your attempt
Correct Answer

A. (900)

Step 1

Concept

The light numbers are \(60,75,90,\ldots\) and \(S_8=900\). Exam tip: treat each gate as one term.

Step 2

Why this answer is correct

The correct answer is A. (900). The light numbers are \(60,75,90,\ldots\) and \(S_8=900\). Exam tip: treat each gate as one term.

Step 3

Exam Tip

लाइटों की संख्या \(60,75,90,\ldots\) है और \(S_8=900\)। परीक्षा में प्रत्येक गेट को एक पद मानें।

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Question 5/5 Hard Mathematics Arithmetic Progressions (AP) Word problems based on APs Class 10 Level 71

एक त्योहार सजावट में पहले गेट पर (48) लाइटें हैं और हर अगले गेट पर (12) लाइटें अधिक हैं। (9) गेटों पर कुल कितनी लाइटें होंगी?

In a festival decoration the first gate has (48) lights and each next gate has (12) more lights. How many lights are there on (9) gates?

Explanation opens after your attempt
Correct Answer

C. (864)

Step 1

Concept

The light numbers are \(48,60,72,\ldots\) and \(S_9=864\). Exam tip: treat each gate as one term.

Step 2

Why this answer is correct

The correct answer is C. (864). The light numbers are \(48,60,72,\ldots\) and \(S_9=864\). Exam tip: treat each gate as one term.

Step 3

Exam Tip

लाइटों की संख्या \(48,60,72,\ldots\) है और \(S_9=864\)। परीक्षा में प्रत्येक गेट को एक पद मानें।

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