Home
Class 11
PHYSICS
In a submarine equipped with sonar, the ...

In a submarine equipped with sonar, the time delay between the generation of a pulse and its echo after reflection from an eneny submarine is observed to be 80 sec. If the speed of sound in water is `1460ms^(-1)`. What is the distance of enemy submarine?

Text Solution

Verified by Experts

The correct Answer is:
Speed of sound in water = 1460 `ms^(-1)`
Time delay = 80s
Distance of enemy ship = ?
Total distance covered = speed `xx` time
= 1460 `ms^(-1) xx 80s` = 116800 m
Time taken is for forward and backward path of sound waves.
Distance of enemy ship = `("Total distance covered")/(2) = (116800)/(2) m`
58400 m (or) 58.4 km
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    FULL MARKS|Exercise TEXTBOOK QUESTIONS SOLVED ( CONCEPTUAL QUESTIONS:)|5 Videos

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED (MULTIPLE CHOICE QUESTIONS)|110 Videos

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    FULL MARKS|Exercise TEXTBOOK QUESTIONS SOLVED ( LONG ANSWER QUESTIONS)|5 Videos

  • MOTION OF SYSTEM OF PARTICLES AND RIGID BODIES

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED - III (LONG ANSWER QUESTIONS (5 MARKS))|6 Videos

  • OSCILLATIONS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED (IV NUMERICAL PROBLEMS )|10 Videos

Similar Questions

Explore conceptually related problems

In a submarine equipped with sonar, the time delay between the generation of a pulse and its echo after reflection from an enemy submarine is observed to be 80 sec. If the speed of sound in water is 1460 ms^(-1) . What is the distance of enemy submarine?

In a submarine equipped with sonar, the time delay between the generation of a pulse and its echo after reflection from an enemy submarine is observed to be 80 sec. If the speed of sound in water is 1460 ms^(-1) . What is the distance of enemy submarine?

In a submarine equipped with sonar, the time delay between the generation of a pulse and its echo after reflection from an enemy submarine is observed to be 80 s. If the speed of sound in water is 1460 ms^(-1) . What is the distance of enemy submarine?

In a submarine fitted with a SONAR the time delay between generation of a signal and reception of its echo from an enemy ship is 110.3 seconds. If speed of sound in water is 1450ms^(-1) then caculate the distance of the enemy ship from the submarine.

In in ocean surveillance system of ship fitted with a (RADAR) the time dely between generation of a radio waves reflected from an enemy ship is observed to be 5.6s. Calculate the distance of the enemy ship from the surveillance ship.

An ultrasound signal of frequency 50 kHz is sent vertically into sea water. The signal gets reflected from the ocean bed and returns to the surface 0.80 s after it was emitted. The speed of sound in sea water is 1500ms^-1 . a) Find the depth of the sea. b) What is the wavelength of this signal in water.

A strong signal is sent from a ship towards the bottom of the sea. It is received back after 1s. What is the depth of sea given that the speed of sound in water 1450ms^(-1)? .

A strong sound signal is sent from a ship towards the bottom of the sea. It is received back after 1s. What is the depth of sea given that the speed of sound in water 1450ms^(-1) ?

Two submarines are approaching each other in a calm sea. The first submarine travels at a speed of 36 km h^-1 and the other at 54 km h^-1 relative to the water. The first submarine sends a sound signal (sound waves in water are also called sonar) at a frequency of 2000 Hz. (a) At what frequency is this signal received by the second submarine ? (b) The signal is reflected from the second submarine. At what frequency is this signal received by the first submarine. Take the speed of the sound wave in water to be 1500 m s^-1 .

Suppose a man stands at a distance from a cliff and claps his hands. He receives an echo from the cliff after 4 second. Calculate the distance between the man and the cliff. Assume the speed of sound to be 343 m s^(-1)

Home
Profile