Why does light striking a metal surface eject only electrons, not protons?

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: Consider an opaque body capable of absorbing red light and illuminated by: Yellow light

A: given: body absorbs = red light (R) illuminated by   = yellow light  (Y)

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: The photon energy is (а) (b) E = hv E = h£ (c) E = h 2 (d) E = hv (e) E = h£

A: Planck's quantum theory states that energy can be exchanged within matter and radiation…

Q: What does Huygens-Fresnel principle state?

A:

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: what part of the electromagnetic spectrum is most absorbed by water?

A: A material absorbs light when the natural frequency of oscillation of that material matches with the…

Q: The energy of a photon that has a wavelength of 785 nm is. 2.53 x 10-19,

A:

Q: Of the following, photons of which color light carry the most energy? A. blue B. green C. yellow…

A: We have  E = h*f E = h*(c/wavelength)  Energy and wavelength are inversely related. The order of…

Q: What new idea about energy did Planck use to explain blackbody radiation?

A: An idealized physical body that possess the tendency to absorb and radiate whole part 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: Is it necessary that that every black coloured objects should be considered a blackbody?

A: A perfect black body is a body that absorbs all the radiation that falls on it.

Q: could a light bulb approximate a blackbody?

A: Black body absorbs radiation of all wavelength which are incident on it. Black body does not reflect…

Q: The wavelength of a photon determines its (select two answers) Brightness Speed Color Energy

A: Solution

Q: Why will the leaves of a red rose be warmed more than the petals when illuminated with red light?

A: The petals of a red rose reflect all the red light coming from the source, whereas the leaves absorb…

Q: Light behaves like a ______ when it interacts with matter, and like a _______when it interferes with…

A: Light behaves as a particle when it interacts with matter for example, in the photoelectric effect,…

Q: Why will the leaves of a red rose be warmed more than the petals when illuminated with red light?…

A: Given: red rose

Q: Why is a red-hot object cooler than a white-hot one of the same material?

A:

Q: Why can't light carry any momentum at all?

A:

Q: If 9.6 ev is created, what is the frequency of the energy wave generated?

A: The energy of the wave is given as E = 9.6 eV.

Q: If you see a “violet-hot” star, you can be certain its peak intensity is in the ultraviolet range.…

A: Objects start to glow red at about  . As they get hotter, they will appear orange, yellow, white and…

Q: How do the surface temperatures of reddish, bluish, and whitish stars compare?

A:

Q: Why does not light carry momentum?

A:

Q: Do you think light acts as a particle or as a wave?

A: The light acts as both, a particle as well as a wave. Different experiments are conducted by various…

Q: Which has the higher frequency, red or blue light? Which has the greater energy per photon, red or…

A: In the visible spectrum, the increasing order of wavelength is  Violet, indigo, Blue,Green, Yellow,…

Q: A 2.0-kg object falls from a height of 5.0 m to the ground. If all the gravitational potential…

A:

Q: When something is painted red, what color is most absorbed?

A:

Q: Why won’t a very bright beam of red light impart more energy to an ejected electron than a feeble…

A: Violet has more frequency than red .Energy of electromagnetic radiation is directly proportional to…

Q: How does incident light that falls on an object affect the motion of electrons in the atoms of the…

A: When light with a certain frequency is incident on an object it can be absorbed, reflected or…

Q: Calculate the energy of a red photon of wavelength 700 nm and compare it to the energy of a violet…

A: Energy of a photon is given by following formula: E=hcλ E is the energy, h is the Planck's constant…

Q: Find the power per unit area radiated from the sun’s surface in the wavelength range 600.0 to 605.0…

A: Here,  Wavelength range= 600nm- 605nm To find: Power radiated per unit area.

Q: Why does a fireplace poker appear black when not in the fire and red, yellow, or white when left in…

A:

Q: Very big particles, like droplets of water, absorb more radiation than they scatter. How does this…

A: Scattering means the change in the  direction of particles due to collisions of two or more…

Q: How does the ditrection of polarization of light compare with the direction of vibration of the…

A:

Q: Object A is hotter than object B.   The light emitted from object A is    (a) hotter than the…

A:

Q: Determine the wavelength (in nm) of light that should be used to double the maximum kinetic energy…

A: Given, wavelength of light = 208 nm     Maximum Kinetic energy = 3.59 × 10-19 J Maximum Kinetic…

Q: When an object is painted red, what color is absorbed most?

A: When an object is painted red, it looks red because the molecules in the paint have absorbed the…

Q: Why does the candle light appears dimmer as you move back?

A: The given problem can resolved using the concept of intensity of light.  Intensity of light (I) can…

Q: Sunlight, considered to be white, actually appears to be a bit yellow. Why?

A: The phenomenon in which the light rays deviates from its original straight path by striking  on…

Q: if light is coming in from a less dense object to a denser object, how does it react?

A: According to Snell's law, when light travels from rarer medium to denser medium it bend towards the…

Q: Choose the BEST answer to the following: Among these colors, the one having the most energy per…

A: Answer: di,e Violet.

Q: Which has greater energy per photon: red or blue light?

A: The energy of a photon is inversely proportional to its wavelength.

Q: What evidence can you cite for the wave nature of light? For the particle nature of light?

A: Wave nature and the particle nature

Q: Calculate the energy of a photon of wavelength 600 nm (or 600 x 10-9 m).

A: Given :-  wavelength(λ) = 600 nm = 600 * 10-9 m energy of photon = h c /λ where h is planck's…

Nature of light

Light is transverse and electromagnetic radiation that exhibits the properties of a wave as well as a particle. For this reason, light is said to have a “dual nature.”