Physics Questions

Q:

The pitch of a sound depends on its ____.

A) frequency B) wavelength
C) amplitude D) timbre
 
Answer & Explanation Answer: A) frequency

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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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Q:

What is the unit of the physical quantity "Capacitance"?

A) weber B) farad
C) tesla D) ohm
 
Answer & Explanation Answer: B) farad

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Q:

If the force applied on the object is in the direction of its motion, the speed of the object __________.

A) increases B) stops
C) decreases D) no effect
 
Answer & Explanation Answer: A) increases

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Q:

What is the heat generated (in J) in a heating element of resistance 1000 Ω when a current of 0.1 A passes through it for 25 seconds?

A) 250 B) 2500
C) 125 D) 1250
 
Answer & Explanation Answer: A) 250

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Q:

The reflection formed by the plane mirror is ________________.

A) vertical inversion B) a real image
C) lateral inversion D) an enlarged image
 
Answer & Explanation Answer: C) lateral inversion

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Q:

When we see an object, the image formed on the retina is ________

A) Real and inverted B) Real and erect
C) Virtual and erect D) Virtual and inverted
 
Answer & Explanation Answer: A) Real and inverted

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Q:

Assuming that the charge of an electron is 1.6 x 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is

 

 

 

A) 6.25 x 1018 C B) 1.6 x 10-19 C
C) 1.6 x 1019 C D) 0.625 x 1017 C
 
Answer & Explanation Answer: A) 6.25 x 1018 C

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