Find all School-related info fast with the new School-Specific MBA Forum

It is currently 21 Oct 2014, 09:22

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The physical structure of the human eye enables it to sense

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 28 Aug 2010
Posts: 266
Followers: 3

Kudos [?]: 99 [0], given: 11

The physical structure of the human eye enables it to sense [#permalink] New post 03 Dec 2010, 08:53
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

50% (02:04) correct 50% (01:14) wrong based on 90 sessions
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.

(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible


Please can some explain why choice b is not correct ?
[Reveal] Spoiler: OA

_________________

Verbal:new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html
-------------------------------------------------------------------------------------------------
Ajit

Retired Moderator
avatar
Joined: 03 Aug 2010
Posts: 248
Followers: 2

Kudos [?]: 30 [0], given: 41

Re: Need help with this SC ! [#permalink] New post 03 Dec 2010, 11:11
ajit257 wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.

(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible


Please can some explain why choice b is not correct ?



Let me try

when -ing is used without comma , it is directly modifying the immediate previous noun, and comma + ing would modify the subject of the previous clause.

here the making it invisible doesnt modify eye... so B is wrong...

pls add something if someone can add
_________________

http://www.gmatpill.com/gmat-practice-test/

Amazing Platform

Manager
Manager
avatar
Joined: 17 Sep 2010
Posts: 216
Concentration: General Management, Finance
GPA: 3.59
WE: Corporate Finance (Entertainment and Sports)
Followers: 3

Kudos [?]: 13 [0], given: 33

Re: Need help with this SC ! [#permalink] New post 03 Dec 2010, 11:30
I picked C, because of the usage "to be". Damn, should've stuck with my gut and picked A.

Wavelength shouldn't be the subject of the sentence, it should be infrared radiation since that is invisible to the eye.

Just wanted to add on to this: the word "Of" before infrared radiation turns the phrase "of infrared radiation" into a preposition. Aside from some idiomatic expressions, prepositions can't be subjects of the sentence. Therefore, given the context of the sentence, A would work best because it matches up subject and verb perfectly.

ajit257 wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.

(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible


Please can some explain why choice b is not correct ?

Last edited by USCTrojan2006 on 03 Dec 2010, 11:58, edited 1 time in total.
1 KUDOS received
Manager
Manager
User avatar
Joined: 30 Apr 2009
Posts: 136
Followers: 1

Kudos [?]: 33 [1] , given: 9

Re: Need help with this SC ! [#permalink] New post 03 Dec 2010, 13:38
1
This post received
KUDOS
Didnt like "it" in any of the choices, therefore, picked A
_________________

Trying to make CR and RC my strong points

"If you want my advice, Peter," he said at last, "you've made a mistake already. By asking me. By asking anyone. Never ask people. Not about your work. Don't you know what you want? How can you stand it, not to know?" Ayn Rand

2 KUDOS received
Kaplan GMAT Instructor
User avatar
Joined: 21 Jun 2010
Posts: 148
Location: Toronto
Followers: 35

Kudos [?]: 111 [2] , given: 0

Re: Need help with this SC ! [#permalink] New post 03 Dec 2010, 13:42
2
This post received
KUDOS
ajit257 wrote:
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.

(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
(E) however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible


Please can some explain why choice b is not correct ?


Hi! This question is an excellent test of modification, which is heavily tested on the GMAT.

As always, when first evaluating a sentence it's best to ignore the "extra bits" - focus on the subject and verb.

First, we recognize that the semicolon divides two equal sentences; in effect, we can ignore everything that comes before it. So, let's only focus on the underlined portion.

In the original (and, of course, choice (A)), we have:

Quote:
infrared radiation is invisible because its wavelength is too long to be registered by the eye.


Seems like a perfectly sound sentence - it's clear what's invisible (IR), "its" has a single clear antecedent (IR) and no style issues. Lookin' good!

Next up is (B):
Quote:
however, the wavelength ... is too long to be registered by the eye making it invisible.


This one isn't as clear: "it" is supposed to refer to IR, but actually modifies the subject of the sentence, "the wavelength". As noted by our Trojan-loving poster, a prepositional phrase can't be the subject, so even though (B) contains "of infrared radiation" that's not a legal parent noun for "it".

Here's another very useful general rule for the GMAT: ignore prepositional phrases. Such phrases appear all the time and are pretty much always just in there to distract you from the basic sentence structure.

Next we have (C):
Quote:
infrared radiation is invisible because its wavelength is too long for the eye to register it.


More pronoun problems (pronouns are another very commonly tested grammar concept)! "it" at the end of the sentence could refer to either IR or wavelength. When you see an ambiguous pronoun, move on!

(Technically pronouns refer to the closest "legal" preceding parent noun - in this sentence that would be "wavelength" - but for the most part the GMAT abhors pronoun ambiguity.)

How about (D):
Quote:
however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible.


Same issue as (B) - "of infrared radiation" can't be the antecedent for "it".

Finally (E):
Quote:
however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible.


"that" renders this sentence awkward; also, "it" at the end could refer to IR, wavelength or the eye.
_________________

Stuart Kovinsky
stuart.kovinsky@kaplan.com
Kaplan Test Prep & Admissions
Toronto Office
1-800-KAP-TEST
http://www.kaptest.com/GMAT

Prepare with Kaplan and save $150 on a course!

Image

Kaplan Reviews

Manager
Manager
avatar
Joined: 10 Sep 2010
Posts: 133
Followers: 2

Kudos [?]: 12 [0], given: 7

Re: Need help with this SC ! [#permalink] New post 03 Dec 2010, 16:26
I got it wrong by choosing 'C' rather than 'A'.
Thanks for the explanation.
Director
Director
avatar
Joined: 03 Aug 2012
Posts: 914
Concentration: General Management, General Management
GMAT 1: 630 Q47 V29
GMAT 2: 680 Q50 V32
GPA: 3.7
Followers: 13

Kudos [?]: 239 [0], given: 318

Premium Member CAT Tests
Re: The physical structure of the human eye enables it to sense [#permalink] New post 01 Sep 2013, 10:33
The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye.

Analyses of the sentence:

The Physical Structure ..... enables IT(eye- clear antecedent) to sense light of....; Infrared radiation..... is invisible because ITS wavelength- .........

Although the first IT is in non-underlined portion , we will analyse all pronoun-antecedent pairs.

We will run the MGMAT Sc guide proposed filtering test to check for pronoun ambiguity.

(1). Number / Gender:

First IT can refer to EYE(singular) and structure(singular) [Number]
Second ITS can refer to "Infrared radiation","light", "eye", and "structure".

(2). Repeats : Second ITS can refer to EYE as the FIRST one refers to EYE.

(3). Proximity: FIRST IT is closer to EYE, so refers to EYE
SECOND ITS is closer to "IR", so refers to IR

(4). Case: There is no point of case as IT is in same clause.
We don't have || clauses here so cannot apply this step.


(A) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long to be registered by the eye
Correct as is and as explained above.
(B) however, the wavelength of infrared radiation—0.1 millimeters—is too long to be registered by the eye making it invisible
Making what invisible - "the wavelength" or the IR
(C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it
We apply repeats , proximity and case.
Repeats => IT logically refers to IR
Proximity => IT refers to EYE
Case => No || clauses

(D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible
EYE is thus INVISIBLE - nonsense
(E) however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible
Repeats => IT occurs only once
Proximity => IT refers to EYE
Case => IT appears to refer to IR correctly
But "THAT" clauses restricts the 0.1 MM wavelength=> change in meaning
_________________

Rgds,
TGC!
_____________________________________________________________________
I Assisted You => KUDOS Please
_____________________________________________________________________________

Re: The physical structure of the human eye enables it to sense   [#permalink] 01 Sep 2013, 10:33
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic The physical structure of the human eye enables it to sense vanidhar 3 21 Oct 2010, 05:04
The physical structure of the human eye enables it to sense nightwing79 5 27 May 2009, 20:15
1 The physical structure of the human eye enables it to sense maverick101 1 28 Feb 2008, 20:58
The physical structure of the human eye enables it to sense Parbe 2 11 Sep 2007, 12:09
8 Experts publish their posts in the topic The physical structure of the human eye enables it to sense beckee529 15 27 Jul 2007, 23:52
Display posts from previous: Sort by

The physical structure of the human eye enables it to sense

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.