AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

If a metallic cube of edge $1 cm$ is drawn into a wire of diameter $4 mm$ , then what is the length of the wire?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

24 π cm

25 π cm

15 π cm

25 2 π cm

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Given that a metallic cube of edge

1 cm

and the diameter of the wire is 4mm.
We have the following formulae,
Volume of the cube =

a 3

Volume of the cylinder

= π r 2 h

The radius of wire will be,

= D 2 = 2 m m

1 cm = 10 mm V cube = V cylinder 103 = π × (2) 2 × h

(10 × 10 × 10) = π × 4 × h ⇒ 1000 4 π = h ⇒ 250 mm π = h 1 cm = 10 mm ⇒ 25 π cm = h

Thus, the length of the wire is

25 π cm

.
Therefore the correct option is 2.

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!