White light is an example of:

[SSC CHSL 2023]

Which of the two colours of spectrum forms the extremes?

[RRB NTPC CBT]

Name the phenomenon where an opaque object on the path of light becomes very small and where light has a tendency to bend around it and not walk in a straight line.

[SSC CGL 2024]

The blue colour of the sky is due to the:

[RRB NTPC CBT]

Travellers in deserts often tend to have an optical illusion of a sheet of water where none actually exists. What is this called?

[RRB NTPC CBT]

Which of the following types of light carries a signal from a television remote to the device it controls ?

[RRB NTPC CBT]

What is the color of the light emitted by the Sun ?

[SSC CGL 2019]

Which among the following has its refractive index closest to that of crown glass ?

[SSC CGL 2019]

Identify the INCORRECT pair regarding the material media and their refractive index ?

[SSC CHSL 2024]

The _______ of a ray is the angle measured from the reflected ray to the normal surface.

[SSC CHSL 2022]

The ability of a medium to refract light is also expressed in terms of its:

[RRB NTPC CBT]

Which of the following is an example of scattering of light?

[RRB NTPC CBT]

Which colour of light from VIBGYOR has minimum wavelength?

[SSC CHSL 2023]

Which of the following is NOT an example of refraction of light?

[RRB NTPC CBT]

Which colour of light from VIBGYOR has minimum energy ?

[RRB NTPC CBT]

What is the wavelength range of visible light ?

[SSC CHSL 2024]

4. Gold and copper happen to absorb ______ and violet light, leaving yellow light.

[SSC CGL 2021]

Rainbow is a natural phenomenon that shows:

[RRB NTPC CBT]

White light is an example of:

[RRB NTPC CBT]

Which of the following scientific principles is suitable for the working of optical fiber?

[Lower-II (Re-exam)]

In an optical fibre the signal is transmitted

[UPP Computer Operator 21-12-2018 (Batch-02)]

In a neon laser, all the atoms emit the light waves of 

Which types of waves are utilized in typical TV remote controls?

In a double-slit experiment with electrons, the interference pattern disappears if:

Which of the following series in the hydrogen spectrum lies in the ultraviolet region?

Snells Law states that, the ratio of the sine of the angle of __________  to the sine of the angle of __________  is a constant, for the light of a given colour and for the given pair of medium”.

Which of the following statements about diffraction is correct?

Which optical phenomenon explains why the edges of shadows appear blurred?

Which of the following statements about polarization of light is correct?

What is the effect observed when light passes through a narrow slit and spreads out into a series of bright and dark bands?

'There is a change in direction of a wave passing from one medium to another.' What is this phenomenon called?

What is the phenomenon where light waves cancel each other out, resulting in regions of darkness?

Which of the following are the highest-frequency electro magnetic waves?

The formation of a rainbow is NOT due to the ______ of light by suspended tiny water droplets.

What phenomenon explains why a straw in a glass of water appears bent at the surface?

What is the condition for constructive interference of light waves?

What is the effect observed when light waves reinforce each other to produce brighter regions, as seen in soap bubbles or oil films?

Which among the following is the name of the effect in which light scatters in colloidal dispersion, and show no light in a true solution?

In a progressive wave, what is the phase difference (in degrees) between two points whose phases are opposite?

Which optical phenomenon explains why the edges of shadows appear blurred?

What is the condition for constructive interference of light waves?

Which of the following statements about light and its behaviour are correct?

1. The critical angle for total internal reflection decreases with an increase in the refractive index of the medium.
2. The focal length of a concave mirror is positive, while that of a convex mirror is negative.
3. When light passes from a denser medium to a rarer medium, it bends towards the normal.

A white and smooth surface is like?

If the value of the refractive index increases then:

What is the effect observed when light waves reinforce each other to produce brighter regions, as seen in soap bubbles or oil films?

Which types of waves are utilized in typical TV remote controls?

What is the phenomenon where light waves cancel each other out, resulting in regions of darkness?

Which of the following angles are equal in the case of a plane mirror?
I. Angle of incidence
II. Angle of refraction
III. Angle of reflection

______ is an angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface with no reflection.

A ray of light strikes a mirror at 60° to the surface of the mirror. Find the angle of incidence and angle of reflection.