Physics
Identify the figure which depicts the correct dispersion and deviation of light.
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Answer
Reason — When white light passes through a prism, it splits into its constituent colours in such a way so that violet deviates the most (bends the most) because it has the shortest wavelength and highest refractive index while red deviates the least because it has the longest wavelength and lowest refractive index.
Related Questions
A radioactive source emits three types of radiations R, S and T. The diagram given below shows an experimental set up to study the penetrating properties of R, S and T. Which type of radiation are R, S and T ?
(a) R - α - particle S - β - particle T - γ - rays (b) R - α - particle S - γ - rays T - β - particle (c) R - β - particle S - α - particle T - γ - rays (d) R - γ - rays S - β - particle T - α - particle - Option (a)
- Option (b)
- Option (c)
- Option (d)
An object in a denser medium when viewed from a rarer medium appears to be raised. The shift is maximum for:
- red light
- violet light
- yellow light
- green light
When a tuning fork is sounded in air, the sound given by it is feeble. But when it is placed on a table top, the sound becomes much louder. The reason is :
- amplitude of the wave
- its prongs start vibrating rapidly
- presence of a surrounding wave
- large surface area of the vibrating body