Dispersion and Scattering of Light

The national science day is celebrated every year on February $28$ to honour Sir C.V Raman.

Who explained the reason for the blue colour of sky and space?

The reason for the blue of sky and space is explained by C.V Raman.

Describe the contributions of C.V Raman in science.

The phenomenon of scattering of light by the colloidal particles gives rise to rainbow.

Explain scattering of light by a colloid.

The phenomenon of scattering of light by the colloidal particles gives rise to _____ effect.

The phenomenon of scattering of light by the colloidal particles gives rise to _____.

A sound source sends waves of $500 \mathrm{Hz}$. It produces waves of wavelength $3 \mathrm{m}$. The velocity of sound waves (in $\mathrm{m}/\mathrm{s}$) is:

A sound source sends waves of $400 \mathrm{Hz}$. It produces waves of wavelength $2.5 \mathrm{m}$. The speed of sound waves is:

A ruby-throated hummingbird beats its wings at a rate of about $70$ wing beats per second. Assuming the sound wave moves with a velocity of $350 \mathrm{m}/\mathrm{s}$, what is the wavelength of the wave?

Explain Raman effect.

Raman effect is also known as Raman _____.

The ray coming out of a glass after refraction is known as the emergent ray.

A thin prism P₁ with angle $4^{\mathrm{o}}$ and made from glass of refractive index $1.54$ is combined with another thin prism P₂ made from glass of refractive index $1.72$ to produce dispersion without deviation. What is the angle of prism in degree ?

Raman spectroscopy is used to analyse a wide range of materials, including gases, liquids and solids.

The sky appears black when seen from the moon (or outer space) because _____ of light is not prominent at such height due to the absence of particles.

Violet has the smallest wavelength, but colour of sky is blue. Why?

Calculate refractive index of a equilateral glass prism for a light of red colour. Angle of minimum deviation for red colour is $30°$.

A ray of light incident at an angle of $48°$ on a prism of refracting angle $60°$ suffers minimum deviation. Determine the angle of minimum deviation in degrees.