The angle of incidence of a ray for which the angle of refraction is 90° is called ____...? Mcqs

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The angle of incidence of a ray for which the angle of refraction is 90° is called ____...?

(A) Refracted Angle
(B) Critical Angle

(C) Incident Angel
(D) Angle of Deviation

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When light strikes an opaque object, the light is blocked, thus a ________ is formed on the opposite side of the object....?

(A) Reflection
(B) Refraction

(C) Image
(D) Shadow

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When an oscillating object is in simple harmonic motion, its maximum speed occurs when the object is at its _____...?

(A) Highest point
(B) Lowest point

(C) Equilibrium point
(D) Extreme point

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The materials required for photosynthesis are _______...?

(A) Water (H2O) and Oxygen (O2)
(B) Water (H2O) and Carbon Dioxide (CO2)

(C) Carbon Dioxide (CO2) and Light Energy
(D) Glucose (C6H12O6) and Oxygen (O2)

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Which type of machine is a bicycle and crane...?

(A) Compound Machine
(B) Simple Machine

(C) Both A and B
(D) None

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Salt among following is ______...?

(A) HCl
(B) KCl

(C) HNO3
(D) H2SO4

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According to Big Bang Theory, the Universe began about __________ billion years ago....?

(A) 10 – 20
(B) 20 – 30

(C) 30 – 40
(D) 40 – 50

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Which gas among the following is responsible for global warming due to the greenhouse effect...?

(A) Oxygen (O2)
(B) Nitrogen (N2)

(C) Carbon Dioxide (CO2)
(D) Helium (He)

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Candela is the basic unit of_________________...?

(A) luminous intensity
(B) heat producing value

(C) Thermodynamic temperature
(D) radioactive decay

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Which statement is/are correct about particles in gases...?

(A) Particles are widely spread out
(B) Particles are not in regular pattern and Particles have large empty spaces between them

(C) Particles are widely spread out
(D) All of these

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