Adolf Hitler − Profile

P.S The second ans is 7.2*10⁹ J

Energy consumed=power rating*time used

power rating=1000 KVA or 1000 kW(since 1 KVA= 1 kW since power factor is not given we assume it at 1.0)

therefore energy consumed=1000kW*2h

=>2000 kWh or 2.0 mWh

(ii) since 1 kWh=3.6*10⁶ Joule

     therefore 2000 kWh=1600*3.6*10⁶ Joule

=>72*10⁸ J

Decibel(dB)

Elasticity of the medium.

Quality of sound will change.

Loudness will change.

Red light since intensity of scatteringis inversely proportional to the fourth power of the wavelength.

The dispersion of light is the phenomenon of splitting of white light into its constituent colours after passing through a prism.

The angle of deviation is minimum in this case (if i=e)

In this case i=e