Home » Author Archives: admin (page 16)

Author Archives: admin

difference between astronomical telescope and galilean telescope

Comparison table :                   Astronomical telescope     Galilean telescope 1:In an astronomical telescope the eye piece is a convex lens. 1:In Galilean telescope the eye piece is concave lens. 2:It forms an inverted image. 2:It forms an erect image. 3:The length  of astronomical telescope is: L =f0   + fe   ...

Read More »

Difference between interference and diffraction of light

Interference of light The modification in the distribution of light energy due to superposition of two or more waves is called interference of light. Conditions for interference Light source should be monochromatic. Light source should be coherent mean they should not be independent but should be subsidiary source and derived from a single source. The light source should be narrow ...

Read More »

uses of laser in daily life

List of uses of laser and applications in the field of medicine, industry, and agriculture The intense heat produced in a small area by a laser beam is also used for welding and matching metals and for drilling tiny holes in the hard material. The precise straightness of a laser beam is also useful to surveyors for lining up equipment ...

Read More »

How can you determine the polarity of unlabeled magnet?

The polarity of an unlabelled magnet is determined by following methods. First method: Suspend the magnet freely with the help of a thread so that it can oscillate freely.When magnet comes to rest ,one end always points towards the northern end of the earth.This end of magnet is thus called the North pole.Similarly,the other end of the magnet pointing towards ...

Read More »

do electron tend to go to regions of high potential or low potential?

Electrons are negatively charged particles.When placed in an electric field ,negatively charged plate will repel them while positively charged plate will attract them.So,the electrons will move from negatively charged plate to positively charged plate.Since positively charged plate is at higher potential,while negatively charged plate is at lower potential.Therefore electrons tend to go from region of lower potential to a region ...

Read More »

Why is the electron volt often a more convenient unit of energy than a joule?

Both electron volt and joule are the units of energy.Since energies at atomic level are very small and are expressed in electron volt rather than Joule because Joule is a bigger unit.Hence the unit electron volt for energy is more convenient than joule,when we are dealing with atoms and nuclei to express the energy.  

Read More »

biot savart law:definition, examples, problems and applications

What is the definition of biot savart law? “The magnetic induction at any point produced by current element is directly proportional to the product of the current and the differential element and inversely proportional to the square of distance of the point from the differential element.” Formula of Biot Savart law [latex]\dB=\frac { { \mu  }_{ 0 } }{ 4\pi ...

Read More »

Difference between gas turbine and steam turbine

Idea of gas turbine is very old one,its working principle is an advanced version of wind mill.To achieve efficient working of turbine,the movement of  gas is controlled and directed to blades.The air which is under pressure supplied to turbine by air compressor. In gas turbine initially the air is obtained from atmosphere and compressed in air compressor.The air which is ...

Read More »

difference between mass and weight in tabular form

Unfortunately, weight and mass are often considered to be same quantities and misused in daily conversations.It is therefore essential for you to differentiate between these two physical quantities. 5 differences between mass and weight of a body Properties of mass Mass is the quantity of matter possessed by a body. It is a scalar quantity,which has magnitude only. Its unit ...

Read More »

newton’s ring experiment with animation

Newton’s ring is a process in which Circular bright and dark fringes obtained due to air film enclosed between a Plano convex lens and a glass plate.An air wedge film can be formed by placing a Plano-convex lens on a flat glass plate.The thickness of film is zero where the lens and the plate are in contact with each other.The ...

Read More »