Explanation:

About the Raman Effect

• It is a phenomenon in spectroscopy discovered by the physicist Sir Chandrasekhara Venkata Raman in 1928.  
• It made him the first Indian to win the Nobel Prize in the field Physics in 1930. 
• The Raman Effect is a change in the wavelength of light that occurs when a light beam is deflected by molecules. Most of this scattered light is of unchanged wavelength. 

About Raman Spectroscopy

• Raman showed that the energy of photons scattered inelastically serves as a ‘fingerprint’ for the substance the light is scattered from. 
• As a result of this, Raman spectroscopy is now commonly used in chemical laboratories all over the world to identify substances. 
• It is also used in medicine to investigate living cells and tissues – even detecting cancers – without causing harm. 
• Laser light rather than sunlight is used as the source of photons. Hence both statements are correct.