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Physics

Which mirror is used as rear view mirror in vehicles?

Convex is used as rear view mirror in vehicles. A convex mirror, fish eye mirror or diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source. The passenger-side mirror on a car is typically a convex mirror. In some countries, these are labeled with the safety... readmore

March 21, 2011 | Imran Jutt | No Comments | 61 views

At which point water has maximum density?

Water has maximum density at 4 degree centigrade. Water (H2O) is the most abundant compound on Earth’s surface, covering about 70%. In nature, it exists in liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at standard temperature and pressure. At... readmore

| Imran Jutt | No Comments | 236 views

At Which Point Water Does Not Boil?

Water does not boil at 273 Kelvin. The kelvin is a unit of measurement for temperature. It is one of the seven base units in the International System of Units (SI) and is assigned the unit symbol K. The Kelvin scale is an absolute, thermodynamic temperature scale using as its null point absolute zero.  Read More →

| Imran Jutt | No Comments | 275 views

Which Color Has Shortest Wavelength in Spectrum

In the visible spectrum, the color having the shortest wavelength is red. A spectrum is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. The word saw its first scientific use within the field of optics to describe the rainbow of colors in visible... readmore

| Imran Jutt | No Comments | 465 views

Which Device is Used to Convert Alternate Current into Direct Current?

Transformer is used to convert alternating current into direct current. A transformer is a static device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer’s coils. A varying current in the first or primary winding creates a varying... readmore

| Imran Jutt | 1 Comment | 654 views

Which Of the Following is The Best Insulator?

Glass is the best insulator. Glass is an amorphous (non-crystalline) solid material. Glasses are typically brittle, and often optically transparent. The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, made of about 75% silica (SiO2) plus Na2O, CaO... readmore

| Imran Jutt | No Comments | 719 views

What is The Fourth State of Matter?

The fourth state of matter is plasma. The plasma effect is a computer-based visual effect animated in real-time. It uses cycles of changing colors warped in various ways to give an illusion of liquid, organic movement.  Read More →

| Imran Jutt | No Comments | 173 views

Which of the following is a conventional source of energy?

Hydro power is a conventional source of energy. Hydro power, hydraulic power or water power is power that is derived from the force or energy of moving water, which may be harnessed for useful purposes. Prior to the development of electric power, hydro power was used for irrigation, and operation of... readmore

March 19, 2011 | Imran Jutt | No Comments | 34 views

What is Radiation? How Energy is Transferred Through Radiation

Radiation modes of heat transmission. In physics, radiation is a process in which energetic particles or energy or waves travel through a medium or space. There are two distinct types of radiation; ionizing and non-ionizing. Radiation with sufficiently high energy can ionize atoms. Most often, this occurs... readmore

| Imran Jutt | No Comments | 77 views

What Are Non-Conventional Energy Sources?

Biogas is a non-conventional source of energy. Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Biogas originates from biogenic material and is a type of biofuel.  Read More →

| Imran Jutt | No Comments | 335 views
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