Find the luminous intensity of the sun if it produces the same illuminance on the earth as produced by a bulb of 10000 candela at a distance `0.3 m` . The distance between the sun and the earth is `1.5 xx 10^(11) m`

Estimate the mass of the sun, assuming the orbit of the earth round the sun to be a circle. The distance between the sun and earth is 1.49 xx 10^(11) m and G = 6.66 × 10^(-11) Nm^(2)//kg^(2) .

Find the magnitude of the gravitational force between the Sun and the earth. (Mass of the Sun =2xx10^(30) kg, mass of the earth =6xx10^(24)kg and the distance between the centres of the Sun and the earth =1.5xx10^(11)m , (G=6.67xx10^(-11)N.m^(2)//kg^(2))

Solve the following examples / numerical problems: Find the magnitude of the gravitational force between the Sun and the earth.( Mass of the Sun =2xx10^30 kg, mass of the earth = 6xx10^24 kg and the distance between the centres of the Sun and the earth = 1.5xx 10^11 m, G =6.67 xx10^-11 N-m^2 /kg^2 ).

Assuming that the earth performs unifrom circular motion around the Sun, find the centripetal acceleration of the earth. [ Speed of the earth = 3xx 10^(4) m/s. distance between the earth and the Sun = 1.5 xx 10^(11) m ]

How far from Earth must a body be along a line joining the sun to the earth so that resultage gravitational pull on the body due to Earth and sun is zero ? Distance between sun and the Earth is 1.5 xx 10^(8) km . Mass of sun = 3.25 xx 10^(5) times mass of Earth.

What is the escape velocity of a body from the solar system? Calculate using the following data. Mass of the sun = 2xx 10^(30) kg . The distance between earth and the sun = 1.5 xx 10^(11) m .

Solve the following examples / numerical problems: The time taken by the earth to complete on revolution around the Sun is 3.156 xx 10^7 s. The distance between the earth and the sun is 1.5 xx 10^11 m . Find the speed of revolution of the earth.

It takes time 8 min for light to reach from the sun to the earth surface. If speed of light is taken to be 3 xx 10^8 m s^(-1) , find the distance from the sun to the earth in km.

A comet is in highly elliptical orbit around the Sun. The period of the comet's orbit is 90 days. Some statements are given regarding the collision between the comet and the earth. Mark the correct statement. [Mass of the Sun = 2 xx 10^(30) kg , mean distance between the earth and the Sun = 1.5 xx 10^(11)m .]