To what color of light are our eyes most sensitive?

Q: Is a light a particle, wave or a combination of both? Give examples

A: Like any other wave, the light also goes through reflection and refraction. Therefore it has…

Q: Why Sun is Yellow?

A: Sun emits most strongly in the green-yellow-red part of the spectrum. And if  green is added to red,…

Q: Which color of light has the higher energy per photon, violet or red?

A: The energy of photon be defined as, E=hν

Q: If light has a lot of energy, it will have

A: GIVEN: Light has energy

Q: What do you understand by the invisible spectrum?

A: The visible spectrum of light consists of 7 colors. i.e. Violet, Indigo, Blue, Green, Yellow, Orange…

Q: Which warms more quickly in sunlight- a colorless or a colored piece of glass? Why?

A: A colored glass can absorb all the colors except its own color while the colorless glass can't…

Q: Which interact more with high frequency light- small particles or large particles?

A: Light can interact with matter in three ways: absorption, transmission and reflection

Q: Fluorescent lights tend to emit less of what color?

A: A Fluorescent tube is a low pressure mercury vapour gas discharge lamb that used the property of…

Q: Why do opaque materials become warmer when light shines on them?

A: The incident light energy on the material of the opaque substances vibrates the atoms r molecules of…

Q: If you pluck a guitar string, it will only vibrate at certain "allowed" frequencies (harmonics),…

A: The answer is given in the image below.

Q: Light, X-rays, and radio waves are all members of the___________ spectrum

A: The spectrum of electromagnetic is a band of frequencies, for the waves in the electromagnetic…

Q: How does the frequency of a radio wave compare to the frequency of the vibrating electrons that…

A: When electron set into vibration, magnetic field will produce. Again, as the electron is having…

Q: The purpose of choke in tube light is?

A: When the switch is ON, in a tube light choke is nothing but the coil/ballast ( inductor) which is…

Q: Distinguish visible light from the electromagneticspectrum.

A: Visible light: Visible is a form of electromagnetic radiation, other electromagnetic radiations are…

Q: Propagation of light is

A:

Q: Does light interact with a detector in a wavelike or a particle-like way?

A: For a detector to detect light, light should transfer energy to detector when it is incident on it.…

Q: Which travels faster through a vacuum - an infrared ray or a gamma ray?

A: Infrared and gamma rays are electromagnetic waves. So they travel at 3×108m/s in vacuum.

Q: What is photon?

A:

Q: If electrons are made to vibrate to and fro at a few hundred thousand hertz , radio waves are…

A: Since the frequency of the vibration of the electrons is a few hundred thousand hertz. The emission…

Q: our eyes are most sensitive to which colour?

A: The average normal human sighted eye is most sensitive under daylight conditions at a wavelength of…

Q: What is the energy associated with this wavelength of light?

A: Given wavelength λ= 587.5 nm Now, Energy given E=hcλwhere h=6.626*10-34             c=3*108 So,…

Q: Ultraviolet light causes sunburn whereas visible light even of greater intensity, does not? Why is…

A: Ultraviolet radiation is the main cause of sunburns. They can change the DNA in skin cells directly.…

Q: Coherent diffraction means

A: Required :: What does coherent diffraction mean.

Q: What would be its wavelength

A:

Q: How is the wavelength of light correlated with its energy content?

A: The energy of light can be expressed as E=hν

Q: What is fluorescence

A: Answer Fluorescence is a molecular phenomenon in which a substance radiates light energy…

Q: diffraction means

A: Defination: Diffraction means bending of light around the corners of an obstacle

Q: Distinguish between monochromatic light and sunlight.

A: Monochromatic light refers to light waves of same wavelength.

Q: Name two dangers of visible light?

A: The visible light is a part of electromagnetic radiation. The wavelength range is 400 nm to 700 nm.…

Q: Visible light is a. Radiation b. Light A way to transfer energy С. d. All of these

A: Visible light is a form of electromagnetic radiation. Visible light is light.  Visible light…

Q: Colors that absorb radiation most effectively are the least effective emitters. O True O False

A: Electromagnetic radiation is emitted and absorbed by all bodies, whether they are black, white, or…

Q: What do we see the different wavelengths of visible light as?

A: Electromagnetic radiation in the range of wavelengths is called visible light or simply light. A…

Q: Ultraviolet light causes sunburns, whereas visible light, even of greater intensity, does not. Why…

A: The frequency of Ultraviolet light is greater than the visible light. The frequency of…

Q: Wavelength is measured in what units?

A: Wavelength is a term that is used to define the distance between the reference point on an adjacent…

Q: Properties of Ultraviolet Waves

A: Following are the properties of ultraviolet waves: The wavelength of ultraviolet waves is -1 x 10-8…

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.