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Q:

Which among the following is false about displacement?

A) It can be positive, negative or zero B) Displacement is never greater than Distance
C) Its SI unit is meter D) It is always positive
 
Answer & Explanation Answer: D) It is always positive

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2 1612
Q:

What is the unit of relative density?

A) kg/m B) kg/m2
C) kg/m3 D) It has no unit
 
Answer & Explanation Answer: D) It has no unit

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1 1611
Q:

Optical fibre works on which of the following principle of light?

A) Reflection B) Refraction
C) Diffraction D) Total internal reflection
 
Answer & Explanation Answer: D) Total internal reflection

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2 1608
Q:

Propagation of sound can be visualised as propagation of ____________ variations in the medium

A) elasticity B) viscosity
C) density D) porosity
 
Answer & Explanation Answer: C) density

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1 1607
Q:

Which glass is used to make spectacles?

A) Crook's glass B) Potash glass
C) Jena glass D) Soda glass
 
Answer & Explanation Answer: A) Crook's glass

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2 1605
Q:

Formula for distance is

A) speed x time B) time / speed
C) speed x acceleration D) velocity / speed
 
Answer & Explanation Answer: A) speed x time

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0 1604
Q:

An anemometer measures which of the following ?

A) Speed of light B) Speed of wind
C) Speed of water current D) Speed of satellites
 
Answer & Explanation Answer: B) Speed of wind

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0 1602
Q:

The greater the difference in _____________, the faster the air moves.

A) humidity B) pressure
C) altitude D) latitude
 
Answer & Explanation Answer: B) pressure

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1 1601