SATHEE: Optics Question 512

Optics Question 512

Question: Find the luminous intensity of the sun if it produces the same illuminance on the earth as produced by a bulb of 10000 candela at a distance 0.3 m. The distance between the sun and the earth is $1.5 \times 10^{11} m$

Options:

A) $25 \times 10^{22} c d$

B) $25 \times 10^{18} c d$

C) $25 \times 10^{26} c d$

D) $25 \times 10^{36} c d$

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Answer:

Correct Answer: C

Solution:

Illuminance produce by the sun $= \frac{L}{{(1.5 \times 10^{11})}^{2}}$

Illuminance produce by the bulb $= \frac{10000}{{(0.3)}^{2}}$

According to problem $\frac{L}{{(1.5 \times 10^{11})}^{2}} = \frac{10000}{{(0.3)}^{2}}$

$\Rightarrow L = \frac{2.25 \times 10^{22} \times 10^{4}}{9 \times 10^{- 2}}$

$= 25 \times 10^{26} C d$

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अगला

Optics Question 512

Question: Find the luminous intensity of the sun if it produces the same illuminance on the earth as produced by a bulb of 10000 candela at a distance 0.3 m. The distance between the sun and the earth is $1.5 \times 10^{11} m$

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Optics Question 512

Question: Find the luminous intensity of the sun if it produces the same illuminance on the earth as produced by a bulb of 10000 candela at a distance 0.3 m. The distance between the sun and the earth is 1.5×1011m

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: Find the luminous intensity of the sun if it produces the same illuminance on the earth as produced by a bulb of 10000 candela at a distance 0.3 m. The distance between the sun and the earth is $1.5 \times 10^{11} m$