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Consider the following statements.
  1. When light interacts with an object, it can either be reflected, refracted or transmitted.
  2. When a stream of light of a particular colour passes through a liquid medium, all the light scattered by the liquid is the same colour of the incident light.
  3. Raman Effect happens due to the change in the wavelength of light that occurs when a light beam is deflected by molecules.
How many of the above statement is/are correct?
  • a)
    Only one 
  • b)
    Only two 
  • c)
    All three 
  • d)
    None
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements. When light interacts with an object...
Statement 2 is incorrect.
  • The Raman Effect refers to the phenomenon in which when a stream of light passes through a liquid, a fraction of the light scattered by the liquid is of a different colour. This happens due to the change in the wavelength of light that occurs when a light beam is deflected by molecules.
  • In general, when light interacts with an object, it can either be reflected, refracted or transmitted. One of the things that scientists look at when light is scattered is if the particle it interacts with is able to change its energy. The Raman Effect is when the change in the energy of the light is affected by the vibrations of the molecule or material under observation, leading to a change in its wavelength.
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Consider the following statements. When light interacts with an object...
Statement 1: When light interacts with an object, it can either be reflected, refracted or transmitted.
This statement is correct. When light interacts with an object, it can undergo three possible outcomes:
- Reflection: Light can bounce off the surface of an object, following the law of reflection, where the angle of incidence is equal to the angle of reflection.
- Refraction: Light can change direction and speed as it passes through a different medium, causing the light rays to bend. This occurs due to a change in the refractive index of the medium.
- Transmission: Light can pass through a transparent or translucent object without being reflected or refracted, resulting in the object being transparent or translucent.

Statement 2: When a stream of light of a particular colour passes through a liquid medium, all the light scattered by the liquid is the same colour of the incident light.
This statement is incorrect. When light passes through a liquid medium, it can get scattered in different directions and can also undergo a change in its wavelength. The scattering of light by molecules in the liquid can cause the incident light to be scattered in various colors, resulting in a phenomenon known as Rayleigh scattering. This is why the sky appears blue during the day, as shorter wavelengths of blue light are scattered more than longer wavelengths of red light.

Statement 3: Raman Effect happens due to the change in the wavelength of light that occurs when a light beam is deflected by molecules.
This statement is correct. The Raman Effect is a phenomenon where the wavelength of light changes when it interacts with the molecular vibrations of a substance. When a light beam is deflected by molecules, some of the scattered light experiences a change in wavelength due to the energy exchange between the light and the molecules. This change in wavelength can provide valuable information about the molecular structure and composition of the substance being studied.

In conclusion, out of the three given statements, only statement 1 and statement 3 are correct. Statement 2 is incorrect as the scattered light by a liquid medium can have different colors than the incident light.
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In 1986, the Government of India, under then Prime Minister Rajiv Gandhi, designated February 28 as National Science Day to commemorate the announcement of the discovery of the “Raman Effect”. This year’s edition is being celebrated under the theme of “Global Science for Global Wellbeing”, in light of India’s G20 presidency. The Raman Effect was the discovery which won physicist Sir CV Raman his Nobel Prize in 1930. Conducting a deceptively simple experiment, Raman discovered that when a stream of light passes through a liquid, a fraction of the light scattered by the liquid is of a different colour. This discovery was immediately recognised as groundbreaking in the scientific community, being the subject of over 700 papers in the first seven years after its announcement. The Raman Effect refers to the phenomenon in which when a stream of light passes through a liquid, a fraction of the light scattered by the liquid is of a different colour. This happens due to the change in the wavelength of light that occurs when a light beam is deflected by molecules. In general, whenlight interacts with an object, it can either be reflected, refracted or transmitted. One of the things that scientists look at when light is scattered is if the particle it interacts with is able to change its energy. The Raman Effect is when the change in the energy of the light is affected by the vibrations of the molecule or material under observation, leading to a change in its wavelength. In their first report to Nature, titled “A New Type of Secondary Radiation,” CV Raman and co-author KS Krishnan wrote that 60 different liquids had been studied, and all showed the same result – a tiny fraction of scattered light had a different colour than the incident light. Raman said, “a phenomenon whose universal nature has to be recognised.”Which of the following attributes can be associated with the Raman Effect? Ultraviolet spectrum of light. Complete scattering of light. Decrease in energy of light. Change in wavelength of light.Which of the statements given above is/arecorrect?

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Consider the following statements. When light interacts with an object, it can either be reflected, refracted or transmitted. When a stream of light of a particular colour passes through a liquid medium, all the light scattered by the liquid is the same colour of the incident light. Raman Effect happens due to the change in the wavelength of light that occurs when a light beam is deflected by molecules.How many of the above statement is/are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'B'. Can you explain this answer?
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