Jean Baptiste De Lamarck; a French biologist postulated the "Theory Of Inheritance of Acquired Characters", also known as Lamarckism. His theory was published in French Science Journal "Philosophic Zoologique" in 1809. Lamarckism theory is based on the idea that;changes acquired or developed by theRead more

Two or more progressive waves can travel simultaneously in a medium without affecting the motion of one another. When they reach at a point, the resultant displacement of the particle at that point is equal to the vector sum of the displacements produced by each wave separately. This is obtained accRead more

Given, Velocity of wave= 100 m/s Wavelength= 20cm = 0.2m Frequency= ? Angular frequency=? Now, Velocity of wave= frequency * wave length or, 100 = frequency * 0.2 or, 100/0.2 = frequency so, frequency = 500 Hz We know, time period(T) = 1/f = 1/500 = 0.002 s Again, Angular frequency = (2*pi)/T = (2*pRead more

Given, Velocity of wave= 100 m/s Wavelength= 20cm = 0.2m Frequency= ? Angular frequency=? Now, Velocity of wave= frequency * wave length or, 100 = frequency * 0.2 or, 100/0.2 = frequency so, frequency = 500 Hz We know, time period(T) = 1/f = 1/500 = 0.002 s Again, Angular frequency = (2*pi)/T = (2*pRead more

Given, Number of cells(n)=6 Emf of each cell(Ee)=1.5 V Internal resistance of each cell(re)=1 ohm External resistance(R)=39 ohm Current(I)=? Potential difference(P.d)=? Now, Total internal resistance(r)=n*re=6*1=6 ohm Total Emf (E)= n*Ee=6*1.5= 9 V Total resistance of circuit = R+r = 39+6 = 45 ohm HRead more

As soon as the switch is made on, an electric field is established in circuit,causing at every point a local electric drift. Hence, current in the circuit is established almost instantly when the switch is made on and the bulb also lights up instantly. this implies that information for the flow of cRead more

## Zoology

## Prasiddhi Dhungana

Jean Baptiste De Lamarck; a French biologist postulated the "Theory Of Inheritance of Acquired Characters", also known as Lamarckism. His theory was published in French Science Journal "Philosophic Zoologique" in 1809. Lamarckism theory is based on the idea that;changes acquired or developed by theRead more

## Wave motion

## Prasiddhi Dhungana

Two or more progressive waves can travel simultaneously in a medium without affecting the motion of one another. When they reach at a point, the resultant displacement of the particle at that point is equal to the vector sum of the displacements produced by each wave separately. This is obtained accRead more

## English

## Prasiddhi Dhungana

The letter is being written by Sita.

## Order them correctly and complete the sentence

## Prasiddhi Dhungana

Ram sang very well at the club last evening.

## Wave

## Prasiddhi Dhungana

Given, Velocity of wave= 100 m/s Wavelength= 20cm = 0.2m Frequency= ? Angular frequency=? Now, Velocity of wave= frequency * wave length or, 100 = frequency * 0.2 or, 100/0.2 = frequency so, frequency = 500 Hz We know, time period(T) = 1/f = 1/500 = 0.002 s Again, Angular frequency = (2*pi)/T = (2*pRead more

## Wave

## Prasiddhi Dhungana

Given, Velocity of wave= 100 m/s Wavelength= 20cm = 0.2m Frequency= ? Angular frequency=? Now, Velocity of wave= frequency * wave length or, 100 = frequency * 0.2 or, 100/0.2 = frequency so, frequency = 500 Hz We know, time period(T) = 1/f = 1/500 = 0.002 s Again, Angular frequency = (2*pi)/T = (2*pRead more

## IQ

## Prasiddhi Dhungana

"Teapot"

## Electromotive force (Current electricity)

## Prasiddhi Dhungana

Given, Number of cells(n)=6 Emf of each cell(Ee)=1.5 V Internal resistance of each cell(re)=1 ohm External resistance(R)=39 ohm Current(I)=? Potential difference(P.d)=? Now, Total internal resistance(r)=n*re=6*1=6 ohm Total Emf (E)= n*Ee=6*1.5= 9 V Total resistance of circuit = R+r = 39+6 = 45 ohm HRead more

## Electric current

## Prasiddhi Dhungana

As soon as the switch is made on, an electric field is established in circuit,causing at every point a local electric drift. Hence, current in the circuit is established almost instantly when the switch is made on and the bulb also lights up instantly. this implies that information for the flow of cRead more

## IQ

## Prasiddhi Dhungana

He weighs meat.