The intensity of light observed from a source of constant intrinsic luminosity falls off as the square of the distance from the object. This is known as the inverse square law for light intensity.
58) Intensity of sound at a point is ____ its distance from the source.
Answer is:
inversely proportional to square of
Explanation:
Related General Physics MCQ with Answers
Answer is:
at a place in a valley below sea level
Explanation:
Because at a place valley below sea level atmospheric pressure is more so it required high temperature to boil.
Answer is:
All of these
Explanation:
Radio telescope is a device used in radio astronomy for detecting and recording radio waves coming from stars and other celestial objects.
Answer is:
visible rays
Explanation:
Bandgap energy in LED semiconducting material is normally in the visible region. i.e. 380nm to 760nm.
Answer is:
Moment of inertia and moment of a force
Explanation:
Moment of inertia (I) = mr2 = (mass * length * length) = ML2 Moment of force (TORQUE) = I * angular acceleration)= M L3 T(-2)