Physics · Science General
Optics and Light Properties
2,019 Questions
Optics and light properties focus on the behavior of light, including reflection, refraction, dispersion, and polarization. This topic also covers the wave nature of light, illumination, and the functioning of optical instruments like microscopes. Questions on these concepts are common in general science sections of SSC, Railways, and State exams.
Reflection and mirrorsRefraction and mediumsLight wave theoriesPolarization and intensity
Optics and Light Properties Questions
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brilliant red light
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Brilliant yellow light
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Brilliant white light
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Brilliant Green light
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Charge in building tops
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Charge in water
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Charge in clouds
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Charge in air
C
Correct answer
Explanation
Lightening is caused due to accumulation of charges on clouds.
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Magnetic effect of electric current
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Lighting effect of electric current
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Chemical effect of electric current
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Heating effect of electric current
D
Correct answer
Explanation
the glowing of bulb is the heating effect of electric current. The tungsten filament gets heated up and hence glows.
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transparent
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transparency
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transpluancy
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opaque
B
Correct answer
Explanation
One ca see through water and glass. Such substances are said to be transparent and the phenomenon is known as transparency.
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Through which light cannot pass
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Which are insoluble in water
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Through which things can be seen clearly
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Which sink into water
A
Correct answer
Explanation
The objects through which light cannot pass and also cannot be seen through, such objects are known as opaque objects, e.g. cardboard.
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opaque
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hard
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translucent
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transparent
C
Correct answer
Explanation
There are some objects which are neither completely transparent nor completely opaque. They are translucent. One cannot see clearly through translucent objects, e.g. butter paper, frosted glass and oil patch etc.
B
Correct answer
Explanation
Error of incorrect usage of comparative degree of adjective. 'More fast' needs to be replaced by 'faster'.
B
Correct answer
Explanation
'An' is the correct answer as ultra starts with a vowel sound.
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than sound waves do
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than sound waves are
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than are sound waves
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than sound waves ever have
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than do sound waves
A
Correct answer
Explanation
X travels faster than Y or 'Y does'.
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Ohm's law
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Newton's Law
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Snell's Law
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None of these
C
Correct answer
Explanation
Snell's Law defines the relationship between the angles of incidence and refraction for light passing through two different media. It states that the ratio of the sines of these angles is equal to the ratio of the refractive indices of the media.
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towards the normal
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away from the normal
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returns on its own path
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none of these
A
Correct answer
Explanation
When light enters a denser medium from a rarer medium, its speed decreases, causing the light ray to bend towards the normal line.
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reflection
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refraction
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displacement
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none of these
B
Correct answer
Explanation
Refraction is the phenomenon where a light ray changes direction as it passes from one transparent medium to another due to a change in its speed.
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reticule
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pixel
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opticon
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diphthong
B
Correct answer
Explanation
One of the many tiny dots of coloured light that make up a digitised image is a pixel.
B
Correct answer
Explanation
In a dispersive medium, the speed of light depends on its frequency. Violet light has the highest frequency and shortest wavelength, causing it to travel the slowest compared to other colors like red.
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Sodium light
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White light
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Ultraviolet light
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None of these
A
Correct answer
Explanation
Monochromatic light consists of a single wavelength or color. Sodium light, which emits a characteristic yellow glow, is a common example of nearly monochromatic light.