Mixture of Colours

Q.

In an interference experiment, monochromatic light is replaced by white light, we will see

Q.

If a red light is sent into water it does not change its color, while its wavelength changes Why?

Q.

Is monochromatic light always coherent?

Q.

By a monochromatic wave, we mean

[AFMC 1995]

1. A single ray

2. A single ray of a single colour

3. Wave having a single wavelength

4. Many rays of a single colour

Q.

By a monochromatic wave, what do we mean?

Q.

In Young's double slit experiment, if the two slits are illuminated with separate sources, no interference pattern is observed because

1. There will be no constant phase difference between the two waves

2. The wavelengths are not equal

3. The amplitudes are not equal

4. None of the above

Q.

In Young's double slit experiment, if monochromatic light is replaced by white light

[AIIMS 2001; Kerala PET 2000; KCET 2004]

1. All bright fringes become white

2. All bright fringes have colours between violet and red

3. Only the central fringe is white, all other fringes are coloured

4. No fringes are observed