Description : On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.The critical angle for a beam of light ... A. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted
Last Answer : C. Partially reflected and partially transmitted
Description : The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference
Last Answer : (4) Multiple reflection and interference Explanation: Light waves reflected by the upper and lower boundaries of a thin film interfere with one another, either enhancing or reducing the reflected light.
Description : Which of the following phenomenon produces colors in soap bubble? (a) Interference (b) Diffraction (c) Polarization (d) Dispersion
Last Answer : (a) Interference
Description : Colors in thin films are because of A. Dispersion C. Interference B. Compton effect D. Diffraction
Last Answer : C. Interference
Description : A thin oil film on a water surface appears coloured because of – (1) reflection (2) interference (3) diffraction (4) polarization
Last Answer : (2) interference Explanation: A thin oil film on a water surface appears coloured because of thin-film interference which involves the interference of light waves reflecting off the top surface of a film with the waves reflecting from the bottom surface.
Description : A thin oil film on a water surface appears coloured because of (1) reflection (2) interference (3) diffraction (4) polarization
Last Answer : interference
Description : Golden view of sea shell is due to - (1) Diffraction (2) Dispersion (3) Polarization (4) Reflection
Last Answer : (3) Polarization Explanation: When a ray of light falls on sea shell, its small amount gets refracted (slightly polarized) and rest almost gets reflected back (fully polarized). So it gets a golden view because of polarization.
Description : Golden view of sea shell is due to (1) Diffraction (2) Dispersion (3) Polarization(4) Reflection
Last Answer : Polarization
Description : A soap bubble shows colours when illuminated with white light. This is due to – (1) Diffraction (2) Polarization (3) Interference (4) Reflection
Last Answer : (3) Interference Explanation: The iridescent colours of soap bubbles are caused by interfering of (internally and externally) reflected light waves and are determined by the thickness of the film. This phenomenon ... are the same as the phenomenon causing the colours in an oil slick on a wet road.
Description : Which of the following supports particle nature of photons? (1) Diffraction (2) Polarization (3) Photoelectric effect (4) Interference
Last Answer : (3) Photoelectric effect
Description : Which of the following phenomenon helps to conclude that light is a transverse wave? (1) interference (2) diffraction (3) polarization (4) refraction
Last Answer : (3) polarization Explanation: The phenomena of interference and diffraction of light were successful beyond doubt to prove that light is a form of wave. But they failed to decide whether light ... light is a transverse wave was established only after the discovery of the phenomenon of polarization.
Description : Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation? (1) Scattering (2) Diffraction (3) Interference (4) Polarization
Last Answer : (1) Scattering Explanation: Sir C.V. Raman was awarded Nobel Prize for his work scattering of radiation. Sir Chandrashekhara Venkata Raman was an Indian physicist born in the former Madras Province in India.
Description : Diffraction and interference demonstrate which of the following? w) particle nature of light x) wave nature of light y) polarization of light z) refraction of light
Last Answer : ANSWER: X -- WAVE NATURE OF LIGHT
Description : Which of the following supports particle nature of photons ? (1) Diffraction (2) Polarization (3) Photoelectric effect (4) Interference
Last Answer : Photoelectric effect
Description : Optical fibres are based on the phenomenon of – (1) Interference (2) Dispersion (3) Diffraction (4) Total Internal Reflection
Last Answer : (4) Total Internal Reflection Explanation: An optical fiber (or optical fibre) is a flexible, transparent fiber made of glass (Silica) or plastic, slightly thicker than a human hair. It functions as a ... is kept in the core by total internal reflection. This causes the fiber to act as a waveguide.
Description : Optical fibres are based on the phenomenon of (1) Interference (2) Dispersion (3) Diffraction (4) Total Internal Reflection
Last Answer : Total Internal Reflection
Description : The wavelength of light has no role in a. Diffraction b. Interference c. Polarization d. Reflection
Last Answer : c. Polarization
Description : The wavelength of light has no role in A. Diffraction B. Interference C. Resolving power D. Polarization
Last Answer : D. Polarization
Description : The wavelength of light has no role in ∙ a. Diffraction ∙ b. Interference ∙ c. Polarization ∙ d. Reflection
Description : Which of the following phenomena provides a convincing proof for wave nature of radiation a) Reflection b) Refraction c) Polarization d) Interference and diffraction
Last Answer : d) Interference and diffraction
Description : Diffraction is special type of __________. A. Reflection B. Refraction C. Interference D. Polarization
Last Answer : B. Refraction
Description : Newton’s light illustrate the phenomenon of (a) Interference (b) Diffraction (c) Dispersion (d) Polarisation
Description : A pond of water appears less deep due to – (1) Reflection (2) Diffraction (3) Refraction (4) Polarization
Last Answer : (3) Refraction Explanation: The apparent depth will look less that its real depth due to the refraction of light. First of all, imagine an object at the bottom of the pond, emitting three beams of light ... eye, and as such perfectly vertical, will not bend one way or another as it leaves the water.
Description : Rainbow is formed due to – (1) refraction and dispersion (2) scattering and refraction (3) diffraction and refraction (4) refraction and reflection
Last Answer : (4) refraction and reflection Explanation: A rainbow is an optical phenomenon that is caused by both reflection and refraction of light in water droplets resulting in a spectrum of light appearing in ... water, then reflected inside on the back of the droplet and refracted again when leaving it.
Description : Rainbow is formed due to (1) refraction and dispersion (2) scattering and refraction (3) diffraction and refraction (4) refraction and reflection
Last Answer : refraction and reflection
Description : A soap bubble shows colours when illuminated with white light. This is due to (1) Diffraction (2) Polarisation (3) Interference (4) Reflection
Last Answer : Interference
Description : Which of the following phenomena suggest that light may be a transverse wave? w) reflection x) polarization y) photoelectric effect z) diffraction
Last Answer : ANSWER: X -- POLARIZATION
Description : "Tice splitting of different colours of light in a prism is : (1) Reflection of light (2) Dispersion light (3) Diffraction light (4) Refraction of light
Last Answer : (2) Dispersion light Explanation: The refractive index of many materials (such as glass) varies with the wavelength or colour of the light used, a phenomenon known as dispersion. This causes ... a wave depends on its frequency, or alternatively when the group velocity depends on the frequency.
Description : Light bends around sharp corners as a result of w) refraction x) reflection y) diffraction z) dispersion
Last Answer : ANSWER: Y -- DIFFRACTION
Description : Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarization
Last Answer : (1) Reflection Explanation: Reflection of sound waves off of surfaces lead to one of two phenomena - an echo or a reverberation. The echo is produced due to hitting of the sound waves with the ... reflected sound wave reaches the ear more than 0.1 seconds after the original sound wave was heard.
Description : Light waves projected on oil surface show seven colours due to the phenomenon of (1) polarisation (2) refraction (3) reflection (4) interference
Last Answer : (4) interference Explanation: In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.
Description : A mirage occurs because of – (1) Reflection by hot ground (2) Total internal reflection by layers of air (3) Interference of light (4) Diffraction of light
Last Answer : (2) Total internal reflection by layers of air Explanation: A mirage is a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the ... -changing mirage. Cold air is denser than warm air and has therefore a greater refractive index.
Description : The phenomenon which causes mirage is – (1) Interference (2) Diffraction (3) Polarisation (4) Total internal reflection
Last Answer : (4) Total internal reflection Explanation: Mirage is caused by total internal reflection in deserts where due to heating of the earth, refractive index of air near the surface of earth becomes lesser than ... ray of light coming from a distant object gets refracted from a denser to a rarer medium.
Description : What is the phenomenon which established the transverse nature of light? (1) Reflection (2) Interference (3) Diffraction (4) Polarisation
Last Answer : (4) Polarisation Explanation: The phenomena which proves the transverse nature alight is polarization. Since the intensity of polarized light on passing through a tourmaline crystal changes, ... waves. Transverse waves are waves that are oscillating perpendicularly to the direction of propagation
Description : Which phenomena shows the particle nature of light? (1) Diffraction (2) Interference (3) Photoelectric effect (4) Polarisation
Last Answer : (3) Photoelectric effect Explanation: The phenomena such as interference, diffraction, and polarization can only be explained when light is treated as a wave whereas photoelectric effect, line spectra, and the production and scattering of x rays demonstrate the particle nature of light.
Description : What is the phenomenon which established the transverse nature of light ? (1) Reflection (2) Interference (3) Diffraction (4) Polarisation
Last Answer : Polarisation
Description : Which of the following phenomenon helps to conclude that light is a transverse wave? (1) interference (2) diffraction (3) polarisation (4) refraction
Last Answer : polarisation
Description : The phenomenon which causes mirage is (1) Interference (2) Diffraction (3) Polarisation (4) Total internal reflection
Last Answer : Total internal reflection
Description : A mirage occurs because of (1) reflection by hot ground (2) total internal reflection by layers of air (3) interference of light (4) diffraction of light
Last Answer : total internal reflection by layers of air
Description : The blue colour of clear sky is due to--------? A. Reflection of light B. Refraction of light C. Diffraction of light D. Dispersion of light (Answer)
Last Answer : D. Dispersion of light (Answer)
Description : The particle nature of light is demonstrated by which of the following? w) the photoelectric effect x) the various colors of light y) the speed of light z) diffraction.
Last Answer : ANSWER: W -- THE PHOTOELECTRIC EFFECT
Description : Longitudinal waves do not exhibit a. Polarization b. Refraction c. Reflection d. Diffraction
Last Answer : a. Polarization
Description : Longitudinal waves do not exhibit ∙ a. Polarization ∙ b. Refraction ∙ c. Reflection ∙ d. Diffraction
Description : The principle on which fiber optics is based is A. refraction C. polarization B. Dispersion. D. Total internal reflection
Last Answer : D. Total internal reflection
Description : Reflections in many directions ∙ a. Diffuse reflection ∙ b. Diffraction ∙ c. Scattering ∙ d. Dispersion
Last Answer : a. Diffuse reflection
Description : What is caused by the transverse nature of electromagnetic waves? A. Polarization B. Interference C. Beamwidth D. Gain
Last Answer : A. Polarization
Description : Twinkling of stars is caused by ? A. Reflection of light B. Polarization of light C. refraction of light (Answer) D. Interference of light E. None of these
Last Answer : C. refraction of light (Answer)
Description : When white light passes through a glass prism, it gets dispersed into colours because (a) glass imparts colours to the light (b) different colours have different speeds in glass (c) interference of light occurs (d) diffraction of light occurs
Last Answer : Ans:(b)