Physics
Kepler's law of planetary motion states that the square of the time period is proportional to the

Semi-major axis
Square of the semi-major axis
Fourth power of the semi-major axis
Cube of the semi-major axis

ANSWER DOWNLOAD EXAMIANS APP

Physics
Stars twinkle because

None of these
the intensity of light emitted by them changes with time.
the distance of the stars from the earth changes with time.
the refractive index of the different layers of the earth's atmosphere ch

ANSWER DOWNLOAD EXAMIANS APP