The point through which a ray of light passes without changing its path is the _____...? Mcqs

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The point through which a ray of light passes without changing its path is the _____...?

(A) Focal Point
(B) Principal Axis

(C) Optical Centre
(D) Centre of Curvature

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Vitamin E reduces the requirement of _________ ....?

(A) Iron
(B) Zinc

(C) Selenium
(D) Magnesium

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Bolometer measures: ____________...?

(A) Breadith of tree
(B) Burning capacity

(C) Heat radiation
(D) Bearing capacity

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Two bulbs are connected in a series circuit. One bulb blows (blast), what will happen to the other bulb...?

(A) Will glow brighter
(B) Also blow (blast)

(C) Remains same
(D) Will glow dimmer

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An astronaut sees the colour of the sky as: _________...?

(A) Blue
(B) White

(C) Red
(D) Black

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As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what...?

(A) “coma” around the comet’s nucleus and a long tail that points away from the sun
(B) “coma” that points away from the sun and a long tail around the comet’s nucleus

(C) Only “coma” around the comet’s nucleus
(D) Only a long tail that points away from the sun

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The term acid comes from the Latin word ____...?

(A) Acere
(B) Acidos

(C) Acare
(D) Acre

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During the daytime for the photosynthesis, plants require ______...?

(A) O2
(B) N2

(C) CO2
(D) H2

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In which stage of mitosis where chromosomes reach towards their respective poles...?

(A) Metaphase
(B) Anaphase

(C) Telophase
(D) Prophase

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The waves that have maximum penetrating power to treat tumors are ______...?

(A) Ultraviolet radiation
(B) Microwaves

(C) Gamma-rays
(D) Radio waves

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