Which among the following types of lenses are prescribed by doctors for a patient suffering from astigmatism...? Mcqs

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Which among the following types of lenses are prescribed by doctors for a patient suffering from astigmatism...?

(A) Cylindrical Lens
(B) Concave Lens

(C) Spherical Lens
(D) Convex Lens

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What is the name of the gas used in an air conditioner...?

(A) Ammonia
(B) Nitrous oxide

(C) Freon
(D) CO2

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Which of the following is not a solid sublime material...?

(A) Glucose
(B) Sodium Chloride

(C) Iodine
(D) Camphor

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Which among the following is manned spacecraft that took the humans to the moon...?

(A) Apollo-15
(B) Apollo-16

(C) Apollo-17
(D) Apollo-18

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Less than one percent of Earth’s water is fresh water but Ocean contains what percent of the total water of planet Earth...?

(A) 99%
(B) 89%

(C) 77%
(D) 97%

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Instrument used for measuring very high temperature is __________...?

(A) Pyroscope
(B) Pyrometer

(C) Seismograph
(D) Xylometer

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The condition for the validity of Ohm's law is that the ______...?

(A) Temperature should remain constant
(B) Current should be proportional to voltage

(C) Resistance must be wire wound type
(D) All of the above

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Optic fibers are mainly used for which of the following:...?

(A) Communication
(B) Weaving

(C) Food indudtry
(D) None of these

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What is the colour of phenolphthalein indicator in basic medium...?

(A) Red
(B) Yellow

(C) Pink
(D) Blue

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The SI unit of Heat is________...?

(A) Watt
(B) Volt

(C) Joule
(D) Newton

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