Question

1) When a beam of white rays is dispersed by a prism which colour will be refracted to a larger extent?

2) The modern atomic mass unit is based on ____

3) What do you mean by photoelectric effect? Answer: Emission of electrons by electromagnetic radiation striking on a metal surface.

4) A raincoat is made of what?


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Answer 1

$\bold{Question:}$

1. When a beam of white rays is dispersed by a prism which colour will be refracted to a larger extent?
2. The modern atomic mass unit is based on ____
3. What do you mean by photoelectric effect? Answer: Emission of electrons by electromagnetic radiation striking on a metal surface.
4. A raincoat is made of what?

$\bold{Answer:}$

1. Violet.
2. Carbon-12.
3. Emission of electrons by electromagnetic radiation striking on a metal surface.
4. Polychloroethene.

Answer 2

Answer:

1)Since different colours of light travel at different speeds, the refractive index is different for each colour. As a result, when white light passes through the refracting surface of the prism, its components bend into different angles, causing the single beam of light to separate

Since violet light has a shorter wavelength, it is slowed more than the longer wavelengths of red light. Consequently, violet light is bent the most while red light is bent the least. This separation of white light into its individual colours is known as dispersion of light.

therefore the answer is RED

2)the modern atomic mass unit is based on the mass of C-12 isotope.

3)The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. ... Emission of conduction electrons from typical metals requires a few electron-volt (eV) light quanta, corresponding to short-wavelength visible or ultraviolet light.

4) Apart from vinyl, cotton and polyester other types of fabrics used for making raincoats are nylon, wool, wool gabardine and microfibres. They could be used in a blended form also.

Explanation:

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