Description : Planets are (a) luminous bodies that twinkle (b) non-luminous bodies that twinkle (c) luminous bodies that do not twinkle (d) non-luminous bodies that do not twinkle
Last Answer : Ans:(d)
Description : Planets do not twinkle because they (a) emit light continuously (b) are luminous sources of light (c) are nearer to us and therefore their light does not pass through the atmosphere (d) are nearer to us and therefore minor variations in their intensity are not noticeable
Description : Read the following statements and choose the correct option. (A) Planets are not luminous bodies. (B) The sun is the nearest star to us from which the
Last Answer : Read the following statements and choose the correct option. (A) Planets are not luminous bodies. (B) The sun ... B are true D. Both A and B are false
Description : The heavenly bodies that do not twinkle are called ………………. . (a) planets (b) stars (c) rockets
Last Answer : (a) planets
Description : Mark the correct answer (a) Planets have an apparent motion and twinkle (b) Planets have no apparent motion but twinkle (c) Planets have an apparent motion but do not twinkle (d) Planets have no apparent motion and do not twinkle
Last Answer : Ans:(c)
Description : Stars twinkle but planets do not twinkle because - (1) they emit light of a constant intensity (2) their distance from the earth does not change with time (3) they are very far away ... and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
Last Answer : (4) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable Explanation: Eris is the most massive and second-largest ... orbiting the Sun, and the largest known body in the Solar System not visited by a spacecraft.
Description : Stars twinkle but planets do not twinkle because (1) they emit light of a constant intensity (2) their distance from the earth does not change with time (3) they are very far away from ... and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
Last Answer : they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
Description : How can non luminous bodies be made luminous?
Last Answer : by reflecting the light energy
Description : The heavenly bodies that twinkle are called ……………………. . (a) earth (b) moon (c) stars
Last Answer : (c) Stars
Description : Temperature of distant luminous bodies can be determined by (1) Mercury thermometers (2) Gas thermometers (3) Pyrometers (4) Colour thermometers
Last Answer : Pyrometers
Description : Nitrogen 1. Is non-essential for the animal bodies 2. In air dilutes oxygen which, otherwise, is very active in the pure form 3. Makes oxygen soluble in blood 4. Is present in DNA and RNA The correct statements are: (a) 1 and 4 only (b) 2 and 4 only (c) 3 and 4 only (d) 1 and 2 only
Last Answer : Ans:(b)
Description : What happens to a nichrome wire in a non-luminous flame?
Last Answer : The color of wire is unchanged.
Description : The hottest part of the gas flame is known as – (1) blue zone (2) non-luminous zone (3) luminous zone (4) dark zone
Last Answer : (3) luminous zone
Description : A sooty flame can be made non-luminous by (A) Admitting more gas (B) Shutting gas supply (C) Admitting more air (D) Shutting air supply
Last Answer : (C) Admitting more air
Description : Combustion of pulverised coal as compared to that of lump coal (A) Develops a non-luminous flame (B) Develops a low temperature flame (C) Can be done with less excess air (D) Provides a lower rate of heat release
Last Answer : (C) Can be done with less excess ai
Description : During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the (A) Incomplete combustion (B) Complete combustion (C) High oxygen in flue gas (D) None of these
Last Answer : (B) Complete combustion
Description : Cannel coal (A) Is non-coking (B) Has a high volatile matter content and burns with a luminous smoky flame (C) Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named (D) All (A), (B) and (C
Last Answer : (D) All (A), (B) and (C
Description : The hottest part of the flame lies in its _________zone. (A) Non-luminous (B) Luminous (C) Yellow (D) Unburnt gases
Last Answer : (A) Non-luminous
Description : We can see non luminous object ,when the light a) emitted by the object falls on the eye . b) is reflected from the object towards eye . c) completely passes through the object . d) gets completely absorbed by object .
Last Answer : b) is reflected from the object towards eye .
Description : The middle zone of a candle flame is known as the ________ zone. a) luminous b)non-luminous c)wax d)burning
Last Answer : a) luminous
Description : The hottest part of the gas flame is known as (1) blue zone (2) non-luminous zone (3) luminous zone (4) dark zone
Last Answer : luminous zone
Description : I have a rather long string of twinkle Christmas lights. Half of the string works, the other half doesn't. What gives?
Last Answer : Sometimes one bad light can ruin the rest of the string, or a significant section of it. Something to do with currents I think not my area of expertise. I recall my mother explaining it to me when I was ... replace the one that's cut off the rest of the string, which means a bit of trial and error.
Description : Why do stars twinkle more on certain nights, compared to others?
Last Answer : My understanding is that the particulate matter in the various layers of earth's atmosphere get in the path of the photons traveling toward us; the twinkling is the particles briefly diffracting ... is little-to no twinkling effect as there are far fewer particles in zero atmospheric conditions.
Description : How can I block seeing someones tweets in Twinkle on the iPhone?
Last Answer : Untweet your twinkle.
Description : How can I change my location in Twinkle?
Last Answer : I think it’s added automatically unless the software can’t detect location.
Description : Why do the stars twinkle in the sky? -General Knowledge
Last Answer : answer:
Description : What is the syllable of twinkle twinkle little star?
Last Answer : Do do so so la la sofa fa mi mi re re doso so fa fa mi mi reso so fa fa mi mi reso so so so la la sofa fa mi mi re re do...
Description : Stars in the sky appear to twinkle due to – (1) a series of refractions (2) a series of reflections (3) a surface tension phenomenon (4) multiple diminishing brightness
Last Answer : (1) a series of refractions Explanation: The movement of air (sometimes called turbulence) in the atmosphere of Earth causes a series of refractions which makes the starlight to get slightly bent as it ... directly and some gets bent slightly away. To our eyes, this makes the star seem to twinkle.
Description : Why do the stars twinkle?
Last Answer : Ans: The light from the stars travels through different layers of space of varying densities. Therefore, the light rays deviate from their original path. Further, these layers are not stationary but keep on moving. This leads to the twinkling of stars.
Description : Stars in the sky appear to twinkle due to (1) a series of refractions (2) a series of reflections (3) a surface tension phenomenon (4) multiple diminishing brightness
Last Answer : a series of refractions
Description : Which one of the following statements is NOT correct concerning the reproductive cycle of Chlamydia? a. Reticulate Bodies Are Infectious. b. Reticulate Bodies Reorganize Into Elementary Bodies. c. Elementary Bodies Infect Host Cells. d. Elementary Bodies Transform Into Reticulate Bodies.
Last Answer : a. Reticulate Bodies Are Infectious.
Description : Candela is the basic unit of---------? A. luminous intensity (Answer) B. heat producing value C. Thermodynamic temperature
Last Answer : A. luminous intensity (Answer)
Description : What is the unit of luminous efficiency of an electric bulb? -Do You Know?
Description : What is a luminous object ?
Last Answer : Objects that do not have their own light or cannot emit light by themselves are called non-luminous objects.
Description : Otp shows then disconnect's in zelio sine wave inverter luminous 1600va?
Last Answer : Need Answer
Description : What is otp error code in my luminous Zelio+1100 inverter and what is solution for this?
Last Answer : Install a plastic window that can resist this air and once you do that make sure to check the information before getting in in your computer what do you want by phone
Description : My luminous zelio 1700 is showing error "sct" and backup is not working?
Last Answer : Cbl code on your inverter is 'check output cable' indication. This is an error code for wrong output cable connection. If you find a Cbl code on your inverter display then you have to check the output cable connection. Don't run your inverter with wrong or loose connections.
Description : My luminous inverter zelio 900VA showing error code Cbl what is this code for?
Description : What is btp error code in luminous zelio inverter?
Last Answer : The btp error code in inverters describes that the mains input MCB on the inverter is tripped so as to protect the device from a short circuit or lightening. During this error the inverter will be in ... cases btp error may even lead to a board complaint if the MCB couldn't protect the inverter.
Description : Match the entries given in Column A with the appropriate ones in Column B. `{:("Column A","Column B"),(A."A plane mirror",(" ")a."Luminous source"),(B
Last Answer : Match the entries given in Column A with the appropriate ones in Column B. `{:("Column A","Column B"), ... of light is maximum",(" ")h."Persicope"):}`
Description : A luminous object O is located at the bottom of a big pool of liquid of refractive index `mu` and depth h. The object O emits rays upwards in all dire
Last Answer : A luminous object O is located at the bottom of a big pool of liquid of refractive index `mu` ... Determine the radius and the area of the circle .
Description : A frosted bulb which may be taken as an isotropic source, gives as illumination of `8lm//m^(2)` at a distance of 5m. Calculate (i) its luminous intens
Last Answer : A frosted bulb which may be taken as an isotropic source, gives as illumination of `8lm//m^(2)` ... and (ii) the total luminous flux from the blub.
Description : Calculate the illuminance at a surface distance 0.5m from a ligth source of luminous intensity 200 cd, assuming normal incidence. If the area of the s
Last Answer : Calculate the illuminance at a surface distance 0.5m from a ligth source of luminous intensity 200 cd, ... , what is the luminous flux on this area ?
Description : The luminous effeciency of a lamp is `51mW^(-1)` and its luminous intensity is 35 cd. Determine the power of the lamp.
Last Answer : The luminous effeciency of a lamp is `51mW^(-1)` and its luminous intensity is 35 cd. Determine the power of the lamp.
Description : A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) luminous flux of the lamp, and (iii) illuminance at a dist
Last Answer : A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) ... iii) illuminance at a distance of 2m from the lamp.
Description : In luminous flame the flame is produce when the air hole is open or close?
Last Answer : A bunsen burner (as used in a science lab or science classroom) will burn quietly, and a flickery yellow (like a wax candle) if the air hole is closed, or closed too much. If the air holes is opened, the flame will turn bluish and become noisy and hotter as more air mixes with the gas.
Description : Is match a luminous object?
Last Answer : yes
Description : Are firework show luminous?
Last Answer : Need answer
Description : The SI unit of luminous emittance is - (1) Lux (2) Candela (3) Lumen (4) Lumen second
Last Answer : (1) Lux Explanation: The lux is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square metre. In photometry, this is used as a ... of the intensity, as perceived by the human eye, of light that hits or passes through a surface.
Description : Which zone of a candle flame is the hottest? (1) Dark innermost zone (2) Outermost zone (3) Middle luminous zone (4) Central zone
Last Answer : (3) Middle luminous zone Explanation: The outermost zone of the flame is blue in colour and it is the hottest part. The innermost zone is the least hot and black in colour.