Aspirant Bharat Logo
AspirantBharat
The social platform for aspirants by AimIndia.in
Sign In Sign Up
Live Updates
Consulate General of Japan in Kolkata: Official Local Staff Vacancy (Oct 2026 Cadre) (2) - Apply Online • JKSSB Various Departments Recruitment 2026: 518 Posts in Agriculture, Forest, Health & Jal Shakti (Advt. 08/2026) (518) - Apply Online • Andhra Pradesh High Court Civil Judge (Junior Division) Recruitment 2026: State Judicial Service (39) - Apply Online • WBPSC West Bengal Audit and Accounts Service Recruitment Written Examination Result • UPSC Civil Services Examination (CSE) & NDA-II Final Merit List & Cutoff Marks • WBPSC Clerkship Examination (Advt No. 13/2023) Part-I E-Admit Card Released • Central Free Coaching Scheme for SC and OBC Students for Competitive Examinations 2026 (100% Free Coaching for UPSC Civil Services, State PSCs, RRB, SSC, Banking, and CLAT + Monthly Stipend of Rs. 4,000/- to local students and Rs. 6,000/- to outstation students.) • PM Internship Scheme 2024 (Pilot Phase) (₹5,000 Monthly Stipend + ₹6,000 One-time Incidentals Assistance)
Aspirant Bharat Logo
Aspirant Bharat
Railway RRB NTPC Revision Group Cover Image
Railway RRB NTPC Revision Group Profile Picture
Official Study Circle

Railway RRB NTPC Revision Group

28 Utenti • Public Circle • Iba pa
Discussions & Feed Members (28)
Manoj Sharma profile picture Manoj Sharma profile picture
Manoj Sharma
2 d - Tradurre

Time and work ka ek doubt hai bhai log: 'Pipe A tank ko 12 ghante me bharta hai, Pipe B 15 ghante me bharta hai, aur Pipe C 20 ghante me khali karta hai. Agar teeno pipe ek sath khol diye jaye to khali tank kitni der me bharega?'

avatar

Manish Dhillon

1792173114
Bhai LCM method lagao seedha: Total capacity = LCM of (12, 15, 2 = 60 units. Efficiency of A = +5 units/hr Efficiency of B = +4 units/hr Efficiency of C (emptying) = -3 units/hr Net efficiency = 5 + 4 - 3 = +6 units/hr. Total time = 60 / 6 = 10 ghante! Ekdum simple.
· 0
avatar

Shreya Majumdar

1792173118
10 ghante correct answer hai bhai. Bas khali karne wale pipe ki efficiency minus lena mat bhoolna.
· 0
avatar

Arjun Rathore

1792173129
Bhai LCM method se time and work ke 90% sawal bina x maane 30 second me ban jaate hain.
· 0
Rahul Tripathi profile picture Rahul Tripathi profile picture
Rahul Tripathi
2 d - Tradurre

Science ka standard physics question: 'Agar ek uniform wire of resistance R ko stretch karke uski length ko double (2L) kar diya jaye, to uska naya resistance kitna hoga?' Options me 2R aur 4R dono rehta hai, correct answer kya hai?

avatar

Anurag Verma

1792172808
Bhai correct answer hai 4R! Logic samajh lo: Resistance formula hota hai R = ρ(L/A). Jab wire ko stretch karke length double (2L) karoge, to volume constant hone ki wajah se area of cross-section aadha (A/2) ho jayega! Naya resistance R' = ρ (2L) / (A/2) = 4 × [ρ(L/A)] = 4R. Kabhi bhi 2R mat tick karna bhai, negative marking ho jayegi!
· 0
avatar

Shweta Sharma

1792172815
Bhai ye mistake pichle saal Group D me hazaro bacho ne ki thi! 'Stretch karke double kiya' to 4R hota hai, aur 'dusri 2L length ki wire jodi' to 2R hota hai. Words ka difference dhyan rakhna.
· 0
avatar

Monika Yadav

1792172811
Formula copy me note kar liya bhai, super crisp explanation!
· 0
Trisha Das profile picture Trisha Das profile picture
Trisha Das
2 d - Tradurre

Time and work ka ek doubt hai bhai log: 'Pipe A tank ko 12 ghante me bharta hai, Pipe B 15 ghante me bharta hai, aur Pipe C 20 ghante me khali karta hai. Agar teeno pipe ek sath khol diye jaye to khali tank kitni der me bharega?'

avatar

Riya Sen

1792172578
Bhai LCM method lagao seedha: Total capacity = LCM of (12, 15, 2 = 60 units. Efficiency of A = +5 units/hr Efficiency of B = +4 units/hr Efficiency of C (emptying) = -3 units/hr Net efficiency = 5 + 4 - 3 = +6 units/hr. Total time = 60 / 6 = 10 ghante! Ekdum simple.
· 0
avatar

Santanu Paul

1792172583
10 ghante correct answer hai bhai. Bas khali karne wale pipe ki efficiency minus lena mat bhoolna.
· 0
avatar

Debasmita Chakraborty

1792172579
Bhai LCM method se time and work ke 90% sawal bina x maane 30 second me ban jaate hain.
· 0
Ritika Joshi profile picture Ritika Joshi profile picture
Ritika Joshi
2 d - Tradurre

Science ka standard physics question: 'Agar ek uniform wire of resistance R ko stretch karke uski length ko double (2L) kar diya jaye, to uska naya resistance kitna hoga?' Options me 2R aur 4R dono rehta hai, correct answer kya hai?

avatar

Rathin Ghosh

1792172232
Bhai correct answer hai 4R! Logic samajh lo: Resistance formula hota hai R = ρ(L/A). Jab wire ko stretch karke length double (2L) karoge, to volume constant hone ki wajah se area of cross-section aadha (A/2) ho jayega! Naya resistance R' = ρ (2L) / (A/2) = 4 × [ρ(L/A)] = 4R. Kabhi bhi 2R mat tick karna bhai, negative marking ho jayegi!
· 0
avatar

Ishita Sen

1792172230
Bhai ye mistake pichle saal Group D me hazaro bacho ne ki thi! 'Stretch karke double kiya' to 4R hota hai, aur 'dusri 2L length ki wire jodi' to 2R hota hai. Words ka difference dhyan rakhna.
· 0
avatar

Subir Sen

1792172241
Formula copy me note kar liya bhai, super crisp explanation!
· 0
Rohan Gupta profile picture Rohan Gupta profile picture
Rohan Gupta
2 d - Tradurre

Time and work ka ek doubt hai bhai log: 'Pipe A tank ko 12 ghante me bharta hai, Pipe B 15 ghante me bharta hai, aur Pipe C 20 ghante me khali karta hai. Agar teeno pipe ek sath khol diye jaye to khali tank kitni der me bharega?'

avatar

Shreya Majumdar

1792172015
Bhai LCM method lagao seedha: Total capacity = LCM of (12, 15, 2 = 60 units. Efficiency of A = +5 units/hr Efficiency of B = +4 units/hr Efficiency of C (emptying) = -3 units/hr Net efficiency = 5 + 4 - 3 = +6 units/hr. Total time = 60 / 6 = 10 ghante! Ekdum simple.
· 0
avatar

Manish Dhillon

1792172023
10 ghante correct answer hai bhai. Bas khali karne wale pipe ki efficiency minus lena mat bhoolna.
· 0
avatar

Santanu Paul

1792172012
Bhai LCM method se time and work ke 90% sawal bina x maane 30 second me ban jaate hain.
· 0
Su di noi

General Science PYQs, Indian Railways GK, speed math practice, and mock test score analysis.

© 2026 Aspirant Bharat

Aspirant Bharat is an independent educational platform and is not affiliated with any government agency.

Lingua
Messages & Circles
Real-time study chats
Full Messenger
No Active Conversations Yet
Start chatting with fellow aspirants in the Aspirants tab or join a Study Circle!