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Q:

The spring balance works on the principle of __________

A) Boyle's Law B) Hooke's Law
C) Bernoulli's principle D) Pascal's Law
 
Answer & Explanation Answer: B) Hooke's Law

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Q:

_______________ states that the ratio of the potential difference across a conductor to the current flowing through it, is a constant, provided that its physical conditions, such as temperature, remain constant.

A) Lenz's Law B) Hooke's Law
C) Ohm's Law D) The coulomb's law
 
Answer & Explanation Answer: C) Ohm's Law

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Q:

Borosilicate glass wear is used in microwave oven because

A) It is not brittle B) It is highly heat resistant
C) It cooks faster than any other vessel D) It is energy efficient
 
Answer & Explanation Answer: B) It is highly heat resistant

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Q:

Instrument for measuring low temperatures is called

A) Diagometer B) Cryometer
C) Chromatoptometer D) Cymometer
 
Answer & Explanation Answer: D) Cymometer

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Q:

In an optical fibre the signal is transmitted

A) in a straight line path B) In a curved path
C) due to total internal reflection D) Due to refraction
 
Answer & Explanation Answer: D) Due to refraction

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Q:

Kelvin (K) is the unit of measurement of ________.

A) Density B) Pressure
C) Mass D) Temperature
 
Answer & Explanation Answer: D) Temperature

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Q:

What is the unit of calorific value?

A) kN/kg B) kJ/kg
C) kW/sec D) kCal/sec
 
Answer & Explanation Answer: B) kJ/kg

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Q:

Warm air is ______.

A) heavier than cold air hence warm air rises up B) lighter than cold air hence warm air moves down
C) lighter than cold air hence warm air rises up D) heavier than cold air hence warm air moves down
 
Answer & Explanation Answer: C) lighter than cold air hence warm air rises up

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