8
Q:

Curie is the unit of

A) temparature B) radio activity
C) heat D) energy

Answer:   B) radio activity



Explanation:
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
 
Answer & Explanation Answer: C) Pascal's Law

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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
 
Answer & Explanation Answer: C) Photometer

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Q:

Identify the unit of measuring intensity of sound.

 

A) Decibels B) Knots
C) Candela D) Ampere
 
Answer & Explanation Answer: A) Decibels

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Q:

Which instrument is used to measure blood pressure?

 

A) Sphygmomanometer B) Lactometer
C) Thermometer D) Glucometer
 
Answer & Explanation Answer: A) Sphygmomanometer

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Q:

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

 

A) Photo B) Iso
C) Mega D) Quasi
 
Answer & Explanation Answer: B) Iso

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Q:

1 horsepower = approximately _____ watts.

 

A) 746 B) 764
C) 647 D) 674
 
Answer & Explanation Answer: A) 746

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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
 
Answer & Explanation Answer: A) Coulomb’s Law

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Q:

What is the unit of measure of a magnetic field?

A) Cobalt B) Ohm
C) Tesla D) Ampere
 
Answer & Explanation Answer: C) Tesla

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