5 years ago in SSC CGL: 9th September 2016

Question 71.A boat is moving away from an observation tower. It makes an angle of depression of 60° with an observer's eye when at a distance of 50m from the tower. After 8 sec., the angle of depression becomes 30°. By assuming that it is running in still water, the approximate speed of the boat is

एक नाव किसी प्रेक्षण टावर से दूर जा रही है। जब वह टॉवर से 50 मीटर की दूरी पर है तो वह प्रेक्षक की द्रष्टि मे 60° का अवनमन कोण बनाती है। 8 सेकण्ड़ के बाद अवनमन कोण 30° का हो जाता है, तो यह मानते हुए कि नाव ठहरे हुए पानी में चल रही है। नाव की लगभग चाल (स्पीड ) बताइए ?

[A] 33km/hr<br>33 कि.मी. /घंटा
[B] 42km/hr<br>42 कि.मी./घंटा
[C] 45km/hr<br>45 कि.मी./घंटा
[D] 50km/hr<br>50 कि.मी./घंटा
Loading...
Next Question

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Overall Stats

Attempted 6
Correct 3
Incorrect 1
Viewed 2

Answers

Guest
Guest
Tushant Daf
Tushant Daf - 1 year ago

Tushant Daf from Pune, India is saying 45km/hr
45 कि.मी./घंटा
is correct answer

Nazia Sayed
Nazia Sayed - 3 years ago

Nazia Sayed from Mumbai, India is saying 45km/hr
45 कि.मी./घंटा
is correct answer

ashi yadav
ashi yadav - 3 years ago

ashi yadav from Auraiya, India is saying 45km/hr
45 कि.मी./घंटा
is correct answer

tejaswini
tejaswini - 3 years ago

tejaswini from Vijayawada, India is saying 42km/hr
42 कि.मी./घंटा
is correct answer

Related Questions

Question 57.



  • [A]
  • [B] ¼
  • [C] ½
  • [D]