Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

a lighthouse, facing north, sends out a fan-shaped beam of light extending fron north-east to north-west. An observer on a steamer, sailing due west, first sees the light when he is 5 km awayfrom the lighthouse, and contonues to see it for 30 x sqrt.2 minutes. What is the speed of the steamer...? Ans... 10 km/h

a lighthouse, facing north, sends out a fan-shaped beam of light extending fron north-east to north-west. An observer on a steamer, sailing due west, first sees the light when he is 5 km awayfrom the lighthouse, and contonues to see it for 30 x sqrt.2 minutes. What is the speed of the steamer...?
Ans... 10 km/h

Grade:upto college level

1 Answers

Chetan Mandayam Nayakar
312 Points
9 years ago

if you draw the diagram(which is a very elementary thing to do) you will realize that the steamer travels 5√2 km when the observer is seeing the light. therefore speed=distance/time=5√2/(√2/2) km/h=10 km/h

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free