Axis ANVE Exam - Topic 5 Question 97 Discussion

Actual exam question for Axis's ANVE exam

Question #: 97
Topic #: 5

If an object is placed 1 m (3 ft) away from a light source and the lux level is 3200 lux, what is the lux level at a distance of 8 m (24 ft)?

A50 lux

B10 lux

C400 lux

D200 lux

Show Suggested Answer

Suggested Answer: A

If an object is placed 1 meter (3 feet) away from a light source with a lux level of 3200 lux, the lux level decreases according to the inverse square law of light. At a distance of 8 meters (24 feet), the lux level can be calculated as:

NewLuxLevel=3200lux(8/1)2=3200lux64=50luxtext{New Lux Level} = frac{3200 text{ lux}}{(8/1)^2} = frac{3200 text{ lux}}{64} = 50 text{ lux}NewLuxLevel=(8/1)23200lux=643200lux=50lux

Thus, at 8 meters, the light intensity drops significantly to 50 lux.

by Rikki at Sep 18, 2024, 05:54 AM

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Stacey

9 months ago

I thought it would be higher, like 200 lux.

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Inocencia

9 months ago

Yup, 50 lux makes sense to me!

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Renay

9 months ago

Wait, how does it drop so much? Sounds off.

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Buck

9 months ago

Definitely going with option A, 50 lux.

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Tambra

9 months ago

It's an inverse square law situation!

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Lorean

10 months ago

I think I remember that doubling the distance reduces the lux by a factor of four, but I'm not confident about the final answer.

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Deandrea

10 months ago

I feel like I might have seen a question like this before, and I think the answer was much lower than 3200 lux at that distance.

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Rachael

10 months ago

This seems similar to a practice question we did in class. I think the lux level decreases with distance, but I can't recall the exact calculation.

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Denny

10 months ago

I remember something about the inverse square law for light intensity, but I'm not sure how to apply it here.

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Aaron

10 months ago

Easy peasy! This is just a matter of plugging the numbers into the inverse square law formula. I've got this one in the bag.

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Roxane

10 months ago

Hmm, I'm a bit unsure about this one. I know it has something to do with light intensity and distance, but I'm not confident I can apply the right formula here.

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Ammie

10 months ago

This looks like a straightforward inverse square law problem. I'll need to remember the formula and plug in the given values.

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Sharee

10 months ago

Okay, let me think this through step-by-step. I know the intensity of light decreases with the square of the distance, so I just need to use that relationship to calculate the new lux level.

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Curtis

11 months ago

I'm a bit confused by this question. What exactly do they mean by "business process integration strategy"? And how do the answer choices relate to that? I'll need to review my notes to make sure I understand the concepts before answering.

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Kimberlie

2 years ago

This question is brighter than a thousand suns! Just kidding, but really, it's not that hard. The answer is clearly C) 400 lux. I mean, come on, it's not rocket science.

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Dylan

2 years ago

I'm sticking with C) 400 lux, it just makes sense.

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Mayra

2 years ago

Actually, I'm pretty sure it's A) 50 lux.

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Tegan

2 years ago

No way, I believe it's D) 200 lux.

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Earleen

2 years ago

I think the answer is C) 400 lux.

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Nikita

2 years ago

Wait, what? I thought this was supposed to be a lighting question, not a math problem. Ugh, I guess I'll just have to guess. I'll go with B) 10 lux, because why not?

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Scarlet

2 years ago

Easy peasy! Just plug the numbers into the formula and you get the answer. C) 400 lux, no doubt about it.

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Noemi

2 years ago

That's correct, just plug in the numbers and you'll get C) 400 lux.

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Rosendo

2 years ago

Yeah, it's a simple calculation. C) 400 lux is the lux level at a distance of 8 m.

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Gaston

2 years ago

I think you're right, C) 400 lux seems to be the correct answer.

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Deeanna

2 years ago

So, the lux level at 8 m would be lower than 3200 lux. I think the answer is B) 10 lux.

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Estrella

2 years ago

I agree with Dianne. The lux level will decrease because the light spreads out.

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Dianne

2 years ago

I think the lux level will decrease as the distance increases.

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Yolande

2 years ago

Woah, this question is a real brain-teaser! I'm gonna have to break out my calculator for this one. Okay, got it - the answer is C) 400 lux.

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Yvonne

2 years ago

That was a tricky one, but C) 400 lux makes sense.

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Clorinda

2 years ago

I agree, it's definitely C) 400 lux.

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Alton

2 years ago

I think the answer is C) 400 lux.

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Filiberto

2 years ago

Hmm, I remember learning about the inverse square law in physics. Let's see, if the distance increases by a factor of 8, the intensity should decrease by a factor of 64. So the answer must be C) 400 lux.

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