Answer:
Option (1), (2) and (3).
Explanation:
Doppler effect may be defined as the change in wavelength due to the the movement of sound or radiowaves travels from the object. The frequency remains same if the distance between the receiver and sender's electromagnetic wave distance is same.
Doppler effect helps to learn about the universe behavior. Hubble used the Doppler effect to study the velocity of galaxy. The galaxy motion can be indicated by the wavelength and light.
Thus, the correct answer is option (1), (2) and (3).
Answer:
<h3>ii) Francis de Almeida (1505-1509): He was the 1st Governor General of Portuguese settlement in India. He followed a policy called BLUE WATERFALLS (strengthening the naval power to expel Arabs from Arabian sea and Indian ocean).</h3>
Explanation:
<h3>THNX MY DEAR SWEET FRND ,BESTIE LOVELY GIRL</h3>
Carbon and hydrogen.
The simplest group of organic molecules are the alkanes which have only these 2 elements. Eg methane, CH4.
it should be C. scientific
