Punya Daya Tahan Lebih, Power Amplifier Hertz HMP 4D Jadi

power 4dPower RDW Professional Type NR 8004D dengan memiliki 4 cxxnel, dengan speck 4 x 850 watt di 8 ohm 4 x 1850 watt di 4 ohm 4 x 2600 watt di 2 ohm 3200 watt diTwo lenses have power of (i) + 2 d (ii) -4D. What is the nature and focal length of each lens? b. An object is kept at a distance of 100 cm from lens of power -4D. Calculate the image distance.