Physics Questions

Q:

What is the unit of the physical quantity, Electrical conductance?

A) lux B) ohm
C) farad D) siemens
 
Answer & Explanation Answer: D) siemens

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Q:

In a qualitative way, the tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called _________.

A) force B) acceleration
C) friction D) inertia
 
Answer & Explanation Answer: D) inertia

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Q:

What does the slope of a velocity time graph represent?

A) Acceleration B) Distance
C) Speed D) Momentum
 
Answer & Explanation Answer: A) Acceleration

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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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Q:

The frequency of direct current is _____________

A) Zero B) 50 HZ
C) 60 HZ D) 100 HZ
 
Answer & Explanation Answer: A) Zero

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Q:

Sextant is an instrument used in which of the following ?

A) Gynaecology B) Navigation
C) Birth control D) Medical treatment
 
Answer & Explanation Answer: B) Navigation

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Q:

The ratio of change in velocity of a body to the total time taken by it is its __________________.

A) acceleration B) displacement
C) force D) momentum
 
Answer & Explanation Answer: A) acceleration

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Q:

In a hydrogen atom, an electron moves in an orbit of radius 5.0 x 10-11 m with a speed of 2.2 x 106 m/s. What is the equivalent current? (Electronic charge = 1.6 x10-19 C)

 

 

A) 0.112 mA B) 112 mA
C) 11.2 mA D) 1.12 mA
 
Answer & Explanation Answer: D) 1.12 mA

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