Physics
An object covers distance which is directly proportional to the square of the time. Its accelaration is

Decreasing
Constant
Zero
Increasing

ANSWER DOWNLOAD EXAMIANS APP

Physics
Stars twinkle because

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

ANSWER DOWNLOAD EXAMIANS APP