Periscope is another optical instrument that works on the principle of total ____...? Mcqs

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Periscope is another optical instrument that works on the principle of total ____...?

(A) Refraction
(B) Diffraction

(C) External Reflection
(D) Internal Reflection

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Two capacitors of 8µF are connected in series then the equivalent capacitance is ______...?

(A) ¼ µF
(B) 2 µF

(C) 3 µF
(D) 4 µF

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Which one of the following is not a way to reduce friction...?

(A) Smooth and polishing surfaces
(B) Less contact area

(C) Oil and lubricants
(D) Ball bearing and rollers

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Law of conservation of mass was given by ____...?

(A) Antoine Lavoisier
(B) Joseph Black

(C) Mikhail Lomonosov
(D) Jean Stas

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The study of organisms and their environment is known as ________...?

(A) Acoustics
(B) Ecology

(C) Ichthyology
(D) None of these

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Addison’s disease is caused by the deficiency of____________...?

(A) Antiduretic Harmone
(B) Luteinising Harmone

(C) Melanophore stimulating Harmone
(D) Adrenocorticotrophic Harmone

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How many number of milk teeth are in the human body...?

(A) 16
(B) 12

(C) 22
(D) 20

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A pair of unlike parallel forces having different lines of force produce _______...?

(A) Equilibrium
(B) Torque

(C) A couple
(D) Unstable equilibrium

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The study of X-rays and their medical applications is called _________ ...?

(A) Radiology
(B) Raciology

(C) Rheumatology
(D) Rheology

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Sequence of physiological changes by which cell commit suicide...?

(A) Apoptosis
(B) Necrosis

(C) Autophagy
(D) Both A and B

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