26.The rainbow is a result of a. Diffraction of the light. b. Interference of th
ID: 1731928 • Letter: 2
Question
26.The rainbow is a result of
a.
Diffraction of the light.
b.
Interference of the light.
c.
Dispersion of the light.
27. Light behaves like
a.
a wave at times, and a particle at other times.
b.
a wave.
c.
a particle.
28. When the distance between an object and a flat mirror is 5 m, the distance between the image and the mirror is
a.
5 m.
b.
7.5 m.
c.
10m.
29. A monochromatic (single frequency, single wavelength) light ray in air (n= 1) enters a glass prism (n= 1.5). In the glass prism
a.
both the frequency and the wavelength are the same as in air
b.
the frequency is the same, but the wavelength is greater than in air.
c.
the frequency is the same, but the wavelength is smaller than in air.
a.
Diffraction of the light.
b.
Interference of the light.
c.
Dispersion of the light.
Explanation / Answer
26. A rainbow is a phenomenon that is caused by all forms that are reflection, refraction and dispersion of light in water droplets that results in aspectrum of light appearing in the sky. So, option c is correct.
27. According to Quantum Mechanics, Light appears as both wave as well as particle. So option a is correct that light acts as a wave at time and a particle at other times.
28. Distance between the person and flat mirror is 5m. So distance between image to that of flat mirror is 5m. So distance between image and flat mirror is 5 + 5 = 10 m. Hence, option c is correct.
29. When the monochromatic light enters from air to glass prism, the wavelength generally decreases in air but the frequency remains the same. So, option c is correct.
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