Reflecting prisms usually work on the principle of total ____...? Mcqs

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Reflecting prisms usually work on the principle of total ____...?

(A) Internal Reflection
(B) External Reflection

(C) Refraction
(D) Diffraction

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The M.K.S. system was first introduced by _________ ...?

(A) Giorgi
(B) Archimedes

(C) Eienstein
(D) Newton

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Frozen dew is also known as________...?

(A) Frost
(B) Black ice

(C) Frozen ice
(D) Black hail

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Which of the following has the highest energy...?

(A) gamma rays
(B) X-rays

(C) Ultra-violet radiation
(D) radio waves

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The thermosphere extends from an altitude of ________ to the base of ________ at ________...?

(A) 75 km, Mesosphere, 670 km
(B) 80 km, Ionosphere, 680 km

(C) 85 km, Exosphere, 690 km
(D) 90 km, Ozone Layer , 690 km

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Scientific name of frog is ____...?

(A) Palaeon
(B) Rana tigrina

(C) Periplaneta
(D) Pheretima

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What are the directions of a magnetic bar...?

(A) North, South, East, West
(B) Up, Down, Left, Right

(C) Positive, Negative, Neutral
(D) North, South

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Which of the following use movable pulleys...?

(A) Water wells
(B) Flags

(C) Bicycles
(D) Cranes

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Which of the following is called smallest, shallowest and coldest ocean of the world...?

(A) Pacific Ocean
(B) Indian Ocean

(C) Arctic Ocean
(D) None of the above

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How many layers does the earth have...?

(A) 1
(B) 2

(C) 3
(D) 4

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