Physics

A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object.

A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand’s backward with the ball while taking a catch. Linear momentum or translational momentum is the product of the mass and velocity of an object.

A mirage occurs because of total internal reflection by layers of air.

Light from Sun reaches Earth in approximately 8 minutes.

The NIOSH states “Under dry conditions, the resistance offered by the human body may be as high as 100,000 ohms.

In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. In a rainbow, raindrops in the air act as tiny prisms. Light enters the raindrop, reflects off of the side of the drop and exits. In the process, it is broken into a spectrum just like it is in a triangular glass prism.

The unit of momentum is the product of the units of mass and velocity.

Since weight of the body is directly proportional to g, the weight of the body is maximum at the centre of the earth and zero at the centre of the earth.

The rate at which energy is transferred is called power and the amount of energy that is usefully transferred is called efficiency.

The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity. Static fluid pressure does not depend on the shape, total mass, or surface area of the liquid.