Ch 6: Direction Sense Test | Reasoning

Dosto, is chapter mein ek aadmi chalta hai — "5 km uttar, phir daaye mudkar 3 km…" — aur poocha jata hai ki wo shuruaat se kitni door hai aur kis disha mein hai.

Ye topic bina naksha (diagram) banaye kabhi mat karo. Dimaag mein rakhne ki koshish mein hi log galti karte hain. Kagaz par chhota sa map — aur answer saamne.

CET Group D mein isse 1–2 questions aate hain. Aur achhi baat — doori nikalne mein Pythagoras triplets (3-4-5, 5-12-13) hi kaam aate hain, jo Maths ke chapter 11 mein padhe the. Chalo! 💪

1. ⭐ 8 Dishayein (compass yaad karo)

Har sawal ki shuruaat: kone mein ye chhota compass bana lo — upar North, daaye East.

2. ⭐ Left/Right Turn — sabse zaroori niyam

⭐ Turn hamesha "jis disha mein munh hai" uske hisaab se hota hai

Munh jis taraf	RIGHT mudo to	LEFT mudo to
North (uttar)	East	West
East (poorab)	South	North
South (dakshin)	West	East
West (paschim)	North	South

Yaad rakhne ka mantra: RIGHT mudne par N → E → S → W → N (ghadi ki disha), LEFT mudne par ulta.

3. Naksha banane ka tarika (Solved Example)

Neeche gaya, phir daaye, phir wapas upar — utni hi doori. Isliye sirf 6 km East ka fark bacha.

✏️ Wahi example step-by-step Step 1: 10 km South (neeche)
Step 2: South par munh hai → left mudo = East → 6 km daaye
Step 3: East par munh hai → left mudo = North → 10 km upar (jitna neeche gaya tha, utna wapas)
Step 4: Upar-neeche cancel ho gaya, sirf 6 km daaye bacha → 6 km, East ✓

4. Doori nikalna (Pythagoras) ⭐

⭐ Seedhi doori (shortest distance) = √(a² + b²) Jab aadmi ek taraf a km aur doosri taraf b km gaya ho (do alag dishayein), to shuruaat se seedhi doori Pythagoras se nikalti hai.
Solved Example: 4 km North, phir 3 km East →
→ √(4² + 3²) = √25 = 5 km, direction North-East ✓
Triplets yaad rakho: 3-4-5 · 6-8-10 · 5-12-13 · 8-15-17 (Maths Ch 11 wale).

5. Parchhai (Shadow) wale sawal

⭐ Parchhai hamesha suraj ke ULTI taraf padti hai Subah — suraj poorab mein → parchhai paschim ki taraf
Shaam — suraj paschim mein → parchhai poorab ki taraf
Solved Example: Shaam ko ek ladke ki parchhai uske daaye padti hai. Uska munh kis taraf hai?
Step 1: Shaam = parchhai poorab ki taraf
Step 2: Yaani poorab uske daaye hai
Step 3: Compass ghumao — jab East daaye ho to munh North ki taraf hota hai ✓

6. Ghoomne (rotation) wale sawal

✏️ Solved Example — South par munh, 45° clockwise, phir 90° anticlockwise Step 1: South se 45° clockwise = South-West
Step 2: SW se 90° anticlockwise = South-East ✓
Yaad rakho: clockwise = N → NE → E → SE → S → SW → W → NW (har kadam 45°)

✏️ Type 1 — "Shuruaat se kitni door aur kis disha?" Naksha banao. Upar-neeche (N-S) alag jodo, daaye-baaye (E-W) alag. Jo bache, wahi answer. Dono bache to Pythagoras.

✏️ Type 2 — "Ab kis disha mein munh hai?" Sirf turns par dhyan do (doori bekaar hai). Right = ghadi ki disha (N→E→S→W), left = ulta.

✏️ Type 3 — Parchhai wale Subah → parchhai paschim, shaam → parchhai poorab. Phir "parchhai daaye/baaye" se munh ki disha nikalo.

✏️ Type 4 — "A, B se kis disha mein hai?" Gaon/ghar wale sawal. Dono ko naksha par point banao, phir jiske baare mein pucha hai usse dekho. "A from C" matlab C par khade hokar A ko dekho.

✏️ Type 5 — Disha badalne wale (SE ko North kehte hain…) "Agar South-East ko North kaha jaye, to West ko kya kahenge?"
Compass ko utna hi ghuma do: SE se N tak jitna ghooma, utna hi sab par lagao → West → South-East ✓

Trick 1: Naksha bina sawal mat chhuo
Kone mein compass, phir har kadam ka teer
Dimaag mein rakhne ki koshish = pakki galti. 15 second ka diagram 1 minute bachata hai.

Trick 2: N-S aur E-W alag-alag jodo
Upar +, neeche − · daaye +, baaye −
15 N, 10 E, 5 S, 10 W → N-S: 15−5 = 10 upar; E-W: 10−10 = 0 → answer 10 km North. Ginti ka jhanjhat khatam!

Trick 3: Turn ka ghadi wala mantra
Right: N → E → S → W
Right mudna = ghadi ki disha mein agla. Left = peeche wala. Ye ek line poora turn-table replace kar deti hai.

Trick 4: Doori mein triplets dhundo
3-4-5 · 6-8-10 · 5-12-13
4 aur 3 dikhe to answer 5 — square-root nikalne ki zaroorat nahi (Maths Ch 11 se).

Trick 5: Parchhai = suraj ka ulta
Subah → paschim · Shaam → poorab
Bas ye do line. Baaki sawal "daaye/baaye" ko compass par ghuma ke nikal jata hai.

❌ Galti 1: Turn ko apne hisaab se lena "Left mudo" ka matlab us aadmi ke left se hai, aapke nahi. South par munh hai to uska left East hai (aapko kagaz par daaye dikhega!). Isliye turn-table ya ghadi wala mantra use karo.

❌ Galti 2: Naksha banaye bina sochna 3-4 mod ke baad dimaag jawab de deta hai. Hamesha chhota diagram banao — ye is chapter ki sabse zaroori aadat hai.

❌ Galti 3: "Kitni door" mein poora rasta jod dena Sawal shuruaat se seedhi doori poochta hai (displacement), na ki kitna chala. 5+3+5+3 nahi — naksha dekho, seedhi line naapo.

❌ Galti 4: Direction ka order ulta karna "A from C" aur "C from A" alag hain! Jiske baad "se/from" likha ho, uspar khade hokar dekhna hai.

❌ Galti 5: Parchhai ko suraj ki taraf dikhana Parchhai hamesha suraj ke ulti taraf padti hai. Subah suraj poorab mein → parchhai paschim, na ki poorab.

Naksha banate waqt upar kya?tap 👆

North (daaye East)

North par munh, RIGHT mudo → ?tap 👆

East

East par munh, LEFT mudo → ?tap 👆

North

South par munh, LEFT mudo → ?tap 👆

East

Right mudne ka kram?tap 👆

N → E → S → W (ghadi ki disha)

North par 2 baar right → ?tap 👆

South

Seedhi doori ka formula?tap 👆

√(a² + b²) (Pythagoras)

4 km N + 3 km E → doori?tap 👆

5 km, North-East

Subah parchhai kis taraf?tap 👆

Paschim (West) — suraj poorab mein

Shaam parchhai kis taraf?tap 👆

Poorab (East)

Shaam ko parchhai daaye → munh?tap 👆

North

NE se 90° clockwise → ?tap 👆

SE

Clockwise kram (45° ke kadam)?tap 👆

N → NE → E → SE → S → SW → W → NW

N-S aur E-W kaise jodein?tap 👆

Alag-alag — upar +, neeche −

"Kitni door" ka matlab?tap 👆

Seedhi doori (chala hua rasta nahi)

Pythagoras triplets?tap 👆

3-4-5 · 6-8-10 · 5-12-13

"A from C" ka matlab?tap 👆

C par khade hokar A ko dekho

Is chapter ki sabse zaroori aadat?tap 👆

Naksha banana

Cheez	Rule
Naksha	Upar N, neeche S, daaye E, baaye W
Right mudna	N → E → S → W
Left mudna	N → W → S → E
N par munh, right	East
S par munh, left	East
Seedhi doori	√(a² + b²)
Triplets	3-4-5, 6-8-10, 5-12-13
Subah parchhai	Paschim
Shaam parchhai	Poorab
Clockwise kram	N, NE, E, SE, S, SW, W, NW
N-S / E-W	Alag-alag jodo, phir bacha hua dekho
"X from Y"	Y par khade hokar X dekho

🎯 Score: 0 / 0 Total questions: 14

Practice (exam-style)

Q1. A man walks 4 km towards north and then 3 km towards east. How far is he from the starting point?

💡 √(4² + 3²) = √25 = 5 km (3-4-5 triplet), direction north-east.

Practice (exam-style)

Q2. A man walks 10 km south, turns left and walks 6 km, then turns left and walks 10 km. Where is he now with respect to the starting point?

💡 South → left = east (6 km) → left = north (10 km, wapas upar) → sirf 6 km east bacha.

Practice (exam-style)

Q3. A person facing north turns 90° to his right twice. Which direction is he facing now?

💡 North → (right) East → (right) South.

Practice (exam-style)

Q4. A boy facing east turns 90° to his left. Which direction is he facing?

💡 East par munh → left = North (right hota to South).

Practice (exam-style)

Q5. Early in the morning, a man faces the rising sun. In which direction does his shadow fall?

💡 Suraj poorab mein hai → parchhai ulti taraf, yaani paschim (uske peeche).

Practice (exam-style)

Q6. In the evening, a boy's shadow falls towards his right. Which direction is he facing?

💡 Shaam = parchhai poorab ki taraf; poorab uske daaye hai → munh north ki taraf.

Practice (exam-style)

Q7. A man walks 5 km east, turns right and walks 5 km, turns right and walks 5 km, then turns right and walks 5 km. How far is he from the start?

💡 East → south → west → north: chaukor poora hua, wapas shuruaat par (0 km).

Practice (exam-style)

Q8. Rahul walks 3 km north and then 4 km west. How far is he from the starting point and in which direction?

💡 √(3² + 4²) = 5 km; upar aur baaye gaya → north-west.

Practice (exam-style)

Q9. If South-East becomes North and North-East becomes West, then what does West become?

💡 SE se N tak compass 225° clockwise ghooma (NE→West bhi isi se milta hai) → West bhi utna ghoomega → South-East.

Practice (exam-style)

Q10. A man walks 2 km north, 3 km east, 4 km south and then 3 km west. Where is he from the starting point?

💡 N-S: 2 − 4 = 2 neeche; E-W: 3 − 3 = 0 → 2 km south.

Practice (exam-style)

Q11. A person facing north-east turns 90° clockwise. Which direction is he facing now?

💡 Clockwise: NE → E (45°) → SE (90°).

Practice (exam-style)

Q12. A person facing south turns 45° clockwise and then 90° anticlockwise. Which direction is he facing?

💡 South → 45° clockwise = SW → 90° anticlockwise = SE.

Practice (exam-style)

Q13. Village A is 5 km north of village B, and village C is 5 km east of B. In which direction is A from C?

💡 C par khade hokar dekho: A upar aur baaye hai → north-west (doori 5√2 km).

Practice (exam-style)

Q14. A man goes 15 m north, 10 m east, 5 m south and then 10 m west. How far is he from the starting point?

💡 N-S: 15 − 5 = 10 upar; E-W: 10 − 10 = 0 → 10 m north.

Is chapter ka pehla aur aakhri niyam — naksha banao (upar N, daaye E). Turn hamesha chalne wale ke hisaab se hota hai: right = N → E → S → W, left = ulta. Doori nikalne mein N-S aur E-W alag-alag jodo; dono taraf kuch bache to √(a²+b²) (aur 3-4-5, 5-12-13 triplets se turant answer). Parchhai hamesha suraj ke ulti taraf — subah paschim, shaam poorab. Aur do baatein jahan sabse zyada marks kat-te hain: "kitni door" ka matlab seedhi doori hai (chala hua rasta nahi), aur "A from C" mein C par khade hokar dekhna hai. 🚀

Direction Sense Test (Disha Gyan)

1. ⭐ 8 Dishayein (compass yaad karo)

2. ⭐ Left/Right Turn — sabse zaroori niyam

3. Naksha banane ka tarika (Solved Example)

4. Doori nikalna (Pythagoras) ⭐

5. Parchhai (Shadow) wale sawal

6. Ghoomne (rotation) wale sawal