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Q:

An object is in static equilibrium when it is _______.

A) at rest B) moving in a circular path
C) moving with uniform velocity D) accelerating at high speed
 
Answer & Explanation Answer: A) at rest

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Q:

A current I flows through a resistor. A source maintains a potential difference of V across the resistor. The energy supplied by the source in time t is 

A) V I t2 B) V I
C) V I t D) V I/t
 
Answer & Explanation Answer: C) V I t

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Q:

What type of force acts on a car moving around a curve?

A) Centrifugal force B) Cohesive force
C) Centripetal force D) Gravitational force
 
Answer & Explanation Answer: C) Centripetal force

Explanation:

It is a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving is called as Centripetal force.

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Q:

What is the unit of the physical quantity, Momentum?

A) newton second B) joule second
C) erg second D) pascal second
 
Answer & Explanation Answer: A) newton second

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Q:

What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

A) 50 B) 12
C) 24 D) 36
 
Answer & Explanation Answer: B) 12

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Q:

The volume of air delivered by the compressor is called

A) Compressor capacity B) Swept volume
C) Free air delivery D) None of these
 
Answer & Explanation Answer: A) Compressor capacity

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Q:

If the radius of the earth decreases and its mass remains the same, then the value of "acceleration due to gravity" will _____ .

A) decrease B) increase
C) remain the same D) become zero
 
Answer & Explanation Answer: B) increase

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Q:

The first equation of motion gives the relation between

A) position and time B) position and velocity
C) velocity and time D) velocity and acceleration
 
Answer & Explanation Answer: C) velocity and time

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