12
Q:

# Water kept in an earthen pot is less cool on rainy days than in summer because during the rainy days

 A) the pores in the pot are closed B) rain water stops oozing out from the pores C) the water that oozes out does not evaporate quickely because of the large percent age of moisture in the air D) surface of the pot becomes damp

Answer:   C) the water that oozes out does not evaporate quickely because of the large percent age of moisture in the air

Explanation:

To evaporate the water that oozes out, heat is required. Part of this heat is taken from the water inside which therefore become cool. Therefore (C) is correct. Here evaporation is less, so cooling too is less.

Subject: Physics
Q:

According to _____, pressure is equal to the force divided by the area on which it acts.

 A) Hooke's Law B) Newton's Law C) Pascal's Law D) Stefan-Boltzmann Law

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 37
Q:

Which instrument is used to measure the intensity of light produced by an unknown source in terms of a standard source?

 A) Dynamometer B) Calipers C) Photometer D) Ammeter

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 66
Q:

Identify the unit of measuring intensity of sound.

 A) Decibels B) Knots C) Candela D) Ampere

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 44
Q:

Which instrument is used to measure blood pressure?

 A) Sphygmomanometer B) Lactometer C) Thermometer D) Glucometer

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 54
Q:

The term ______ is prefixed to scientific terms to describe something that is constant.

 A) Photo B) Iso C) Mega D) Quasi

Explanation:

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0 150
Q:

1 horsepower = approximately _____ watts.

 A) 746 B) 764 C) 647 D) 674

Explanation:

Filed Under: Physics
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4 379
Q:

Which law of physics states that the force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled?

 A) Coulomb’s Law B) Stefan's Law C) Pascal's Law D) Hooke's Law

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 311
Q:

What is the unit of measure of a magnetic field?

 A) Cobalt B) Ohm C) Tesla D) Ampere