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 : The phenomenon which causes mirage is (1) Interference (2) Diffraction (3) Polarisation (4) Total internal reflection
Last Answer : Total internal reflection
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 : What is the phenomenon which established the transverse nature of light ? (1) Reflection (2) Interference (3) Diffraction (4) Polarisation
Last Answer : Polarisation
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 : Newton’s light illustrate the phenomenon of (a) Interference (b) Diffraction (c) Dispersion (d) Polarisation
Last Answer : (a) Interference
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 : 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 : The sparkling of a diamond is due to – (1) total internal reflection of light (2) interference of light (3) polarisation of light (4) refraction of light
Last Answer : (1) total internal reflection of light Explanation: Diamonds sparkle because of the total internal reflection of light. Diamonds have a very high refractive index, meaning they slow light down much more ... so that light seems to get 'trapped' within the diamond giving it it's sparkly appearance.
Description : The sparkling of a diamond is due to (1) total internal reflection of light (2) interference of light (3) polarisation of light (4) refraction of light
Last Answer : total internal reflection of light
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 : Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarisation
Last Answer : Reflection
Description : Endoscopy, a technique which refers to the examination of the inside of a human body is based on the phenomenon of?
Last Answer : Total Internal Reflection of light
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 : 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 : 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 : Which of the following does not support the wave nature of light A. Interference C. Polarisation B. Compton effect D. Diffraction
Last Answer : B. Compton effec
Description : A pond of water appears less deep due to (1) reflection (2) diffraction (3) refraction (4) polarisation
Last Answer : refraction
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 : Which of the following phenomenon produces colors in soap bubble? (a) Interference (b) Diffraction (c) Polarization (d) Dispersion
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 : 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 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 : 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. 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 : hat is the name of the process whereby waves travel around corners and obstacles in their paths? A. Reflection B. Refraction C Interference D. Diffraction
Last Answer : D. Diffraction
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 : Why does water tank appear shallower when viewed from the top? (1) Due to reflection (2) Due to refraction (3) Due to diffraction (4) Due to total internal reflection
Last Answer : (2) Due to refraction Explanation: Water in a swimming pool or water tank appears shallower than its depth because of the refraction of light. The light travels straight as long as it is in the water, but if it emerges obliquely from the water into the air it is bent downward toward the surface.
Description : A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. (1) reflection (2) refraction (3) diffraction (4) total internal reflection
Last Answer : (4) total internal reflection Explanation: If the angle of incidence of light ray in the denser medium is greater than the critical angle of the concerned media pair, the light is not at all reflected in to the rarer medium but is totally reflected. This is known as 'total internal reflection'.
Description : A periscope works on the principle of (1) refraction (2) total internal reflection (3) diffraction (4) reflection
Last Answer : (2) total internal reflection Explanation: Total internal reflection (TIR) is the phenomenon that involves the reflection of the entire incident light off the boundary. Glass prisms can be shaped to ... at an angle greater than the critical angle of 42 and hence they are internally reflected.
Last Answer : total internal reflection
Description : What phenomenon causes the radio-path horizon distance to exceed the geometric horizon? A. Diffraction B. Ducting C. Reflection D. Refraction
Last Answer : D. Refraction
Description : When a CD (Compact Disc used in audio and Video system) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of phenomenon of 1) reflection and diffraction 2) reflection and transmission 3) diffraction and transmission 4) refraction, diffraction and transmission
Last Answer : 4) refraction, diffraction and transmission
Description : Optical fibre works on the principle of (1) refraction (2) scattering (3) interference (4) total internal reflection
Last Answer : (4) total internal reflection Explanation: Since Torque = force x distance, to open a door easily, the handle should be fixed at the greatest distance from the hinges. If we pull with same force on a handle ... from the hinges, we will provide twice the torque, so it will be twice as easy to open.
Description : Optical fibre works on the - (1) principle of refraction (2) total internal reflection (3) scattering (4) interference
Last Answer : b) total internal reflection Explanation: Optical fiber is a cylindrical dielectric waveguide (non-conducting waveguide) that transmits light along its axis, by the process of total internal reflection.
Description : Optical fiber works on the A. principle of refraction B. total internal reflection C. scattering D. interference
Last Answer : B. total internal reflection
Description : Production of beats is a result of the phenomenon of (a) Resonance (b) Interference (c) Reflection (d) Superposition
Last Answer : Ans:(b)
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 : The phenomenon of light associated with the appearance of blue colour of the sky is – (1) Interference (2) Reflection (3) Refraction (4) Scattering
Last Answer : (4) Scattering Explanation: During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface ... day sky is a result of scattering, which is dominated by a smallparticle limit called Rayleigh scattering.
Description : The phenomenon of light associated with the appear-ance of blue colour of the sky is (1) Interference (2) Reflection (3) Refraction (4) Scattering
Last Answer : Scattering
Description : The phenomenon of total internal reflection may occur when light is passing from (a) Air to glass (b) Air to water (c) Air to oil (d) Glass to air
Last Answer : Ans:(d)
Description : In which one of the following the phenomenon of total internal reflection of light is used? (1) Formation of mirage (2) Working of binoculars (3) Formation of rainbow (4) Twinkling of stars
Last Answer : (3) Formation of rainbow Explanation: When the angle of incidence is greater than the critical angle, no refraction occurs. Instead, the incident beam is reflected, obeying the Law of Reflection. This ... , Total Internal Reflection occurs at the rear of the raindrop - the water-to-air interface.
Description : In which one of the following the phenomenon of total internal reflection of light is used ? (1) Formation of mirage (2) Working of binoculars (3) Formation of rainbow (4) Twinkling of stars
Last Answer : Formation of rainbow