To obtain sharp image in a camera _____...? Mcqs

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To obtain sharp image in a camera _____...?

(A) Lens is moved up and down
(B) Lens is moved side to side

(C) Lens is moved back and forth
(D) Lens is fixed in place

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The setting sun often looks oval in the shape because of__________...?

(A) The fact that sun really becomes oval in the evening
(B) Refraction of rays of sun passing through the atmosphere

(C) Optical Illusion
(D) Dispersion

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What does a cylinder measure...?

(A) Length and width
(B) Width and height

(C) Height and diameter
(D) Diameter and circumference

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‘Black holes’ refers to_______________...?

(A) Holes occurring in heavenly bodies
(B) Bright spots on the sun

(C) Collapsing object of high density
(D) Collapsing object of low density

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what is the height of The atmosphere layer mesosphere...?

(A) 85 km
(B) 50 km

(C) 40 km
(D) 10 km

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______________ is used for measuring velocity...?

(A) Speedometer
(B) Anemometer

(C) Odometer
(D) Hygrometer

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Average salinity or ratio of salt as per kilogram of water of ocean is__________...?

(A) 35 grams
(B) 55 grams

(C) 32 grams
(D) 42 grams

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A force that stops things from moving easily is known as:...?

(A) Fraction
(B) Friction

(C) Fission
(D) Flocculation

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Who was the first scientist who gave the concept of gravitation...?

(A) Einstein
(B) Newton

(C) Faraday
(D) Maxwell

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Which living thing would decrease, if the number of frogs increased...?

(A) Hawks
(B) Snakes

(C) Plants
(D) None

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