A light year is a unit of ...? Mcqs

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A light year is a unit of ...?

(A) Time
(B) Energy

(C) distance
(D) Mass

✅ Correct Answer: distance

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Source: This question is taken from the Everyday Science

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When a light ray enters from a denser medium to a rare medium, it bends ______...?

(A) Perpendicular to normal
(B) Parallel to normal

(C) Toward normal
(D) Away from normal

✅ Correct Answer: Away from normal

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Source: This question is taken from the Everyday Science

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Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation...?

(A) ‘Higgs boson particles’ were detected.
(B) Gravitational waves’ were detected.

(C) Possibility of inter-galactic space travel through ‘wormhole’ was confirmed.
(D) It enabled the scientists to understand ‘singularity’.

✅ Correct Answer: Gravitational waves’ were detected.

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Source: This question is taken from the Everyday Science

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The process of splitting water molecules in the presence of light energy is called_________...?

(A) Electrolysis
(B) Photolysis

(C) Radiolysis
(D) Thermolysis

✅ Correct Answer: Photolysis

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Source: This question is taken from the Everyday Science

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Which of the following is mainly used for light patrol engines ...?

(A) Kerosene oil
(B) Paraffin oil

(C) Heavy Fuel oil
(D) Gasoline

✅ Correct Answer: Gasoline

Comments

Source: This question is taken from the Everyday Science

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Light reaches us from the Sun is about 8 minutes and from Sirius in about _____...?

(A) 8 minutes
(B) 8 days

(C) 8 months
(D) 8 years

✅ Correct Answer: 8 years

Comments

Source: This question is taken from the Everyday Science

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Which term describes the emission of light by a living organism...?

(A) Natural light
(B) Bioluminescence

(C) Illumination
(D) Mimicry

✅ Correct Answer: Bioluminescence

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Source: This question is taken from the Everyday Science

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When a person enters a dark room from bright light he is not able to see clearly for a little while because the...?

(A) Eye is unable to adjust itself immediately
(B) Retina becomes insensitive momentarily

(C) Iris is unable to dilate the pupil immediately
(D) Distance between the lens and retina take time to adjust

✅ Correct Answer: Iris is unable to dilate the pupil immediately

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Source: This question is taken from the Everyday Science

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When parallel rays of light fall onto rough surface they are reflected in different directions and are scattered is called _____...?

(A) Regular Reflection
(B) Specular Reflection

(C) Diffused Reflection
(D) None

✅ Correct Answer: Diffused Reflection

Comments

Source: This question is taken from the Everyday Science

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How many light years the earth and sun are away from the center of Milky Way galaxy...?

(A) 27000
(B) 23000

(C) 20000
(D) 25000

✅ Correct Answer: 25000

Comments

Source: This question is taken from the Everyday Science

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The process in which nuclei of heavy elements are broken into lighter nuclei and produce a large amount of heat energy is called...?

(A) Fusion
(B) Geometry

(C) Regales
(D) Fission

✅ Correct Answer: Fission

Comments

Source: This question is taken from the Everyday Science

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1 light year = ...?

(A) 9.5×106 km
(B) 9.5×109 km

(C) 9.5×1012 km
(D) 9.5×1018 km

✅ Correct Answer: 9.5×1012 km

Comments

Source: This question is taken from the Everyday Science

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Which of the following phenomena of light are involved in the formation of a rainbow...?

(A) Refraction
(B) Dispersion

(C) Total internal reflection
(D) All of the above

✅ Correct Answer: All of the above

Comments

Source: This question is taken from the Everyday Science

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Moon light reaches to earth in___________seconds...?

(A) 0.3 seconds
(B) 1.3 seconds

(C) 2.3 seconds
(D) 3.3 seconds

✅ Correct Answer: 1.3 seconds

Comments

Source: This question is taken from the Everyday Science

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In a photocell light energy is converted into...?

(A) potential energy
(B) chemical energy

(C) heat energy
(D) electrical energy

✅ Correct Answer: electrical energy

Comments

Source: This question is taken from the Everyday Science

Latest MCQs

In the absence of sunlight, the entire food chain would become...?

(A) Active and Thrive
(B) Unaffected and Stable

(C) Slow but Survive
(D) Inactive and Collapse

✅ Correct Answer: Inactive and Collapse

Comments

Source: This question is taken from the Everyday Science

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