How is the method of parallax used to find the distance of a planet.

Which one of the following methods is used to measure distance of a planet or a star from the earth?

The time of revolution of planet A round the sun is 8 times that of another planet B . The distance of planet A from the sun is how many times the distance of B from the sun

Describe the method in steps to find the area of an irregular lamina using a graph paper.

Using the method of differentials, find the approximate value of sqrt(0.24) .

A par sec is a convenient unit of length on the astronomical scale. It is the distance o an object that will show a parallax of 1 s of arc from opposite ends of a base line equal to the distance from the earth to the sun. How much is a sec in terms of metre?

Kjeldahl's method is used in the estimation of

Two hypothetical planets 1 and 2 are moving in the same eliptical path as shown in the figure. If the planets are situated at minimum and maximum distance from the sun and one of the planet, say 1 , has speed v . Find the relative angular speed of the planets for the given situation.

The surface temperature of the sun is T_(0) and it is at average distance d from a planet. The radius of the sun is R . The temperature at which planet radiates the energy is

Assertion : Parallax method cannot be used for measuring distance of stars morer then 100 light year away. Reason : Because parallax angle reduces so much that it cannot be measured accurately.

Two planets of mass M and 16M of radius a and 2a respectively, are at distance 10a . Find minimum speed of a particle of mass m at surface of smaller planet so that it can reached from smaller planet to larger planet.