Tag: dual nature of light

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Questions Related to dual nature of light

Multiple choice evs light and shadow dual nature of light nature and sources of light theories on light

The inability of a lens to bring all the rays coming from a point object to focus at one single point is called

  1. Spherical aberration

  2. Parallex

  3. Optical illusion

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spherical aberration occurs when a lens cannot focus all rays from a point source to a single point due to the spherical shape of the lens surfaces.

Multiple choice evs light and shadow dual nature of light nature and sources of light theories on light

By corpuscular theory of light, the phenomenon which can be explained is ____________.

  1. refraction

  2. diffraction

  3. interference

  4. polarisation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Refraction

According to newton, when corpuscles approach the refracting surface , they are attracted near the surface. When they enter the denser medium from a rarer medium, their speed increases and hence change their direction.

Multiple choice evs magic with mirrors dual nature of light nature and sources of light theories on light

Newton postulated his corpuscular theory of light on the basis of:

  1. Newton's rings.

  2. rectilinear propagation of light.

  3. colour through thin films.

  4. Dispersion of white light into colours.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Isaac Newton the geometric nature of reflection and refraction of light could only be explained if light was made of particles, referred to as corpuscles that travel in straight line.

Multiple choice evs magic with mirrors dual nature of light nature and sources of light theories on light

A small plane mirror is placed at the center of the spherical screen of radius R. A beam of light is falling on the mirror. If the mirror makes n revolutions per second, the speed of light on the screen after reflection from the mirror will be:

  1. $4\pi nR$
  2. $2\pi nR$
  3. $nR/2\pi$
  4. $nR/4\pi$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a mirror rotates at n revolutions per second, the reflected beam rotates at 2n revolutions per second. The spot on the screen moves at a speed of v = omega * R = (2 * pi * 2n) * R = 4 * pi * n * R.