Light — Part 2 MCQs with Explanations

virtual and large is the correct answer to “Dentists use a concave mirror because the image built on it is . . . . . . . .”. This question is standard in competitive examination syllabi for Light.

Dust particles is the correct answer to “Diffusion of light in the atmosphere takes place due to”. This question is standard in competitive examination syllabi for Light.

Low refractive index of diamond is the correct answer to “Which of the following does not contribute to the sparking of diamonds”. This question is standard in competitive examination syllabi for Light.

+2 D is the correct answer to “If the focal length of a convex lens is 50 cm, then which one of the following is its power”. This question is standard in competitive examination syllabi for Light.

violet light is the correct answer to “Which of these travels in glass with minimum velocity”. This question is standard in competitive examination syllabi for Light.

Lateral inversion is the correct answer to “. . . . . . . . is not an example of refraction of light.”. This question is standard in competitive examination syllabi for Light.

Crooks glass is the correct answer to “Which one of the following is used for sunglasses”. This question is standard in competitive examination syllabi for Light.

White is the correct answer to “Red + Green + Blue =”. This question is standard in competitive examination syllabi for Light.

About 8 min is the correct answer to “How long does light take to reach the earth from the sun”. This question is standard in competitive examination syllabi for Light.

Sun appearing red at sunset is the correct answer to “Which of the following is not caused by atmospheric refraction of light”. This question is standard in competitive examination syllabi for Light.

Blue is the correct answer to “Which of the following is not a colour created from a combination of two primary colours”. This question is standard in competitive examination syllabi for Light.

Total internal reflection of light is the correct answer to “Endoscope' used by the doctors for examining the inside of patient's stomach, works on the principle of”. This question is standard in competitive examination syllabi for Light.

car headlights is the correct answer to “Parabolic mirrors are used in”. This question is standard in competitive examination syllabi for Light.

Blue wavelength is relatively low as white light and it is most scattered by air molecules is the correct answer to “Why does sky appear blue”. This question is standard in competitive examination syllabi for Light.

Convex mirror is the correct answer to “In driving a car which type of mirror would you like to use for observing traffic at your back”. This question is standard in competitive examination syllabi for Light.

a-4, b-1, c-3, d-2 is the correct answer to “Match the following lists. List-I List-II a. Reflection 1. Twinkling effect of stars b. Refraction 2. Used for reducing glare c. Interference 3. Light added to light produces darkness d. Polarisation 4. Change in path of light without change in medium”. This question is standard in competitive examination syllabi for Light.

Smaller than object but inverted is the correct answer to “The image formed on Retina is”. This question is standard in competitive examination syllabi for Light.

convex lenses is the correct answer to “Hypermetropia or long-sightedness can be corrected by using”. This question is standard in competitive examination syllabi for Light.

Laser beam is the correct answer to “For reproducing sound, a CD (Compact Disc) audio player uses a”. This question is standard in competitive examination syllabi for Light.

Red is the correct answer to “Which colour deviates the least when light passes through a prism”. This question is standard in competitive examination syllabi for Light.

scattering is the correct answer to “Tyndall effect is related to the . . . . . . . . of light.”. This question is standard in competitive examination syllabi for Light.

Ice, Kerosene, Benzene, Rock salt is the correct answer to “Which of the following options represents the correct ascending order of the refractive index of certain substances? (Left to right)”. This question is standard in competitive examination syllabi for Light.

it reflects only red colour is the correct answer to “A rose appears red because”. This question is standard in competitive examination syllabi for Light.

It is the center of a hollow sphere of which spherical mirror is a part is the correct answer to “What is the center of curvature of a spherical mirror”. This question is standard in competitive examination syllabi for Light.

virtual and erect is the correct answer to “A concave lens always forms an image which is”. This question is standard in competitive examination syllabi for Light.

concave mirror is the correct answer to “The reflector of a search light is a”. This question is standard in competitive examination syllabi for Light.

7 colors of white light pass through Glass prism at different speeds is the correct answer to “When white light, which is a mixture of seven colours, passes through a prism, why is it dispersed”. This question is standard in competitive examination syllabi for Light.

Only 1, 2 and 3 is the correct answer to “Consider the following statements. 1. Fibre optics is based on the principle of total internal reflection. 2. In an optical fibre communication system, power consumption is extremely low 3. Optical fibre communications are free from radio frequency interference. 4. In India, Reliance Group of Industries is engaged in the manufacture of the optical fibre. Which of these statements are correct”. This question is standard in competitive examination syllabi for Light.

50 cm is the correct answer to “If the lens power of glass is +2 dioptre, its focal length will be”. This question is standard in competitive examination syllabi for Light.

between F1 and O is the correct answer to “When an object is on the . . . . . . . . of a convex lens, the image is amplified, virtual, and erect.”. This question is standard in competitive examination syllabi for Light.

refraction and reflection of sunlight by water droplets is the correct answer to “Rainbow formation is due to”. This question is standard in competitive examination syllabi for Light.

a parallel beam in one direction is the correct answer to “An optically plane surface reflects a beam of light as”. This question is standard in competitive examination syllabi for Light.

telescope is the correct answer to “Distant objects can be seen with the help of”. This question is standard in competitive examination syllabi for Light.

total internal reflection of light is the correct answer to “Brilliance of diamond is due to”. This question is standard in competitive examination syllabi for Light.

Convex lens is the correct answer to “To remove the defect of long sightedness one uses”. This question is standard in competitive examination syllabi for Light.

All transparent medium is the correct answer to “Raman effect' deals with the light rays passing through”. This question is standard in competitive examination syllabi for Light.

dispersion is the correct answer to “The optical phenomenon that is primarily responsible for the observation of rainbow on a rainy day is”. This question is standard in competitive examination syllabi for Light.

Infinite is the correct answer to “When an object is kept between two parallel plane mirrors then what is the number of images formed”. This question is standard in competitive examination syllabi for Light.

Infinity is the correct answer to “The radius of curvature of the plane mirror is”. This question is standard in competitive examination syllabi for Light.

-2.4 cm is the correct answer to “An object at 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm to get a real image at a distance of 60 cm from the mirror. What is the height of the image formed”. This question is standard in competitive examination syllabi for Light.