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Multiple Choice Questions : Light GK

Are you looking for GK on Light? If Yes then you are at right place. Here you will find detailed General Knowledge on Light - GK Questions and Answers, Trivia, Quiz, Interview MCQ & Light Current Affairs for Government & Competitive Exams like SSC and UPSC, RRB, NDA, CDS exams, around 10% to 20% of GK questions are asked from the Current GK. as you know Light GK MCQS is very important for Competitive Exams. In this GK MCQ section we are covering MCQS on Light

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Question : Why do some automobiles have additional yellow headlights?

A. both (a) and (b)

B. Yellow light is able to penetrate the fog and is thus able to illuminate the road better in fogy nights

C. Yellow light consumes less power

D. Yellow light does not produce dazzling effect in the eyes of the people coming from front

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Question Listed : Light, Sound,

Question : Which one among the following is not produced by sound waves in air?

A. Refraction

B. Reflection

C. Diffraction

D. Polarization

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Question Listed : Light, Sound,

Question : Which of the following types of light are strongly absorbed by plants?

A. Yellow and violet

B. Indigo and yellow

C. Blue and red

D. Violet and orange

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Question Listed : Light, Sound,

Question : Which of the following is a wrong statement?

A. rainbow is formed due to refraction of light in rain drops

B. the same rainbow can be observed by two persons if both have normal vision

C. sometimes two rainbows can be seen simultaneously

D. a rainbow can be seen only when the sun is at your front

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Question Listed : Light, Sound,

Question : Which of the following is a wrong statement?

A. Light is a wave motion

B. Light travels in a straight line

C. Light cannot travel through vaccum

D. Light travels with a speed greater than that of sound

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Question Listed : Light, Sound,

Question : Which components of light are absorbed by chlorophyll?

A. Violet and yellow

B. Blue and red

C. Indigo and orange

D. Violet and red

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Question Listed : Light, Sound,

Question : Which colour is the complementary colour of yellow?

A. Red

B. Orange

C. Green

D. Blue

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Question Listed : Light, Sound,

Question : When sound wave is refracted from air to water, then which of the following will remain unchanged?

A. None of the above

B. Velocity

C. Wavelength

D. Frequency

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Question Listed : Light, Sound,

Question : When a ray of light is going from one medium to another, its

A. wavelength increases

B. frequency increases

C. frequency remains same

D. wavelength remains same

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Question Listed : Light, Sound,

Question : Ultrasonic waves are those sound waves having frequency

A. less than 20 hertz

B. more than 20 kilohertz

C. between 1000 hertz and 20000 hertz

D. between 20 hertz and 1000 hertz

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Question Listed : Light, Sound,

Question : The visible light has a wavelength range from about 380 nm (violet) to 780 nm (red). If an excited object emits light with wavelength of 15 nm, to which one of the following ranges does it belong?

A. Ultraviolet

B. Infrared

C. Gamma ray

D. X-ray

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Question Listed : Light, Sound,

Question : The separation of white light into its component colours is called :

A. Radiation

B. Reflection

C. Refraction

D. Dispersion

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Question Listed : Light, Sound,

Question : The audible frequency range of a human ear is

A. 20 hertz to 20000 hertz

B. 200 hertz to 2000 hertz

C. 2 hertz to 20 hertz

D. 20 hertz to 200 hertz

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Question Listed : Light, Sound,

Question : Sound moves with higher velocity if:

A. both B and C above

B. humidity of the medium is increased

C. temperature of the medium is increased

D. pressure of the of medium is decreased

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Question Listed : Light, Sound,

Question : Propagation of light quanta may be described by

A. Electrons

B. Neutrons

C. Protons

D. Photons

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Question Listed : Light, Sound, Photon,

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