Home
Class 11
PHYSICS
The moon's distance from the earth is 36...

The moon's distance from the earth is `360000 km` and its diameter subtends an angle of `42'` at the eye of the observer. The diameter of the moon in kilometers is

A

4400 km

B

1000 km

C

3600 km

D

8800 km

Text Solution

Verified by Experts

The correct Answer is:
A
`theta = 42^(@) = (pi)/(180^(@))xx(42^(@))/(60^(@))= (11)/(900)` rad
`l= rtheta= (11)/(900) xx 360000 = 4400 ` km
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise EXERCISE-IV ASSERTION & REASON|11 Videos

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise EXERCISE-II AIPMT/NEET & AIIMS (2006- 2018)|6 Videos

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos

Similar Questions

Explore conceptually related problems

The moon's distance from the earth is 360000 km and its diameter substends an angle of 42 at the eye of the observer. The diameter of the moon in kilometers is

The moons distance from the earth is 360,000kms and its diameter subtends an angle of 31 at the eye of the observer.Find the diameter of the moon.

The distance of the moon from the centre of the earth is 385,000 kilometres and moon's diameter subtends an angle of 31 at the eye of the observer.Find the diameter of the moon.

Assuming that the earth radius is 6400 km and that it subtends an angle of 57 at the center of the moon from the earth. find the distance between earth and moon center.

Find the diameter of the sun in km supposing that it subtends an angle of 32 at the eye of an observer.Given that the distance of the sun is 91xx106km.

Find the diameter of the sun in km supposing that it subtends an angle of "32" ' at the eye of an observer.Given that the distance of the sun is 91times10^(6)km.

Describe a method to measure the diameter of the moon or any planet.

Assuming the distance of the earth from the moon to be 38,400km and the angle subtended by the moon at the eye of a person on the earth to be 31, find the diameter of the moon.

Assuming the average distance of the earth from the sun to be 149700000 km and the angle subtended by the sun at the eye of a person on the earth to be 32', find the sun's diameter.

A far off planet is estimated to be at a distance D from the earth. If its diametrically opposite extremes subtend an angle theta at an observatory situated on the earth, the approximate diameter of the planet is