Question

Representative values of speed of light in some media are as follows: Air = 3 lakhs km/s , Water = 2.25 lakhs km/s , Ordinary glass = 2 lakhs km/s , Diamond = 1.25 lakhs km/s. Which of the following statements is correct? * 1 point Optical density of water is more than that of ordinary glass Optical density of ordinary glass is more than that of diamond Optical density of diamond is more than that of air Optical density of air is more than that of water

Answer 1

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity