A laser light beamed at the moon the takes `2.56 s` to return after reflection at the moon's surface . How much is the radius of the lunar orbit around the earth ?

A laser light beamed at the moon the takes 2.56 s to return after reflection at the moon 's surface . How much is the radius of the lunar obit around the earth ?

A LASER is source of very intense, monochromatic, and unidirectional beam of light. These proparties of a laser light can be exploited to measure long distnae. The distance of the moon from the Earth hasl beenn already determine very precisly at the moon's surface. How much is the radius of the luuar orbit around the Earth?

A giant telescope in an observatory has an objective of focal length 19 m and an eye-piece of focal length 1.0 cm . In normal adjustment, the telescope is used to view the moon. What is the diameter of the image of the moon formed by the objective? The diameter of the moon is 3.5 xx 10^(6)m . and the radius of the lunar orbit round the earth is 3.8 xx 10^(8) m .

A diffraction-limited laser of length l and aperture diameter d generates light of wavelength lambda . If the beam is directed at the surface of the Moon a distance D away, the radius of the illuminated area on the Moon is approximately

A acceleration of moon with respect to earth is 0.0027 ms^-2 and the acceleration of anpple falling on earth's surface is about 10ms^-2 . Assume that the radius of the moon is one fourth of the eareth's radius. If the moon is stopped for an instant and then released, it will fal towards the earth. The initial acceleration of the moon toward the will be

Total time taken by a laser beam to return to the earth after reflection from the moon is 2.56 s. Calculate the distance of moon from the earth. Take velocity of light in vacuum =3xx10^8m//s.