Physics Questions

Q:

'Parsec' is the unit measurement of

A) Density of stars B) Astronomical distance
C) Brightness of heavenly bodies D) Orbital velocity of giant stars
 
Answer & Explanation Answer: B) Astronomical distance

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Q:

A force of 200 N displaces a body by 4 m, calculate the work done (in J).

A) 40 B) 500
C) 80 D) 800
 
Answer & Explanation Answer: D) 800

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Q:

One Gigabyte = ? (in decimal value)

A) 1000 bytes B) 10002 bytes
C) 10003 bytes D) 10004 bytes
 
Answer & Explanation Answer: C) 10003 bytes

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Q:

For a body moving with uniform acceleration its final velocity equals _________________.

A) average velocity - initial velocity B) 2 x average velocity - initial velocity
C) 2 x average velocity + initial velocity D) average velocity + initial velocity
 
Answer & Explanation Answer: B) 2 x average velocity - initial velocity

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Q:

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

A) energy B) power
C) force D) pressure
 
Answer & Explanation Answer: D) pressure

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Q:

A sound of single frequency is called a

A) Hertz B) Tone
C) Pitch D) Note
 
Answer & Explanation Answer: B) Tone

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Q:

Find the position of the image formed by a concave mirror when the object is placed between P and F?

A) At infinity B) Between F and C
C) Behind the mirror D) Beyond C
 
Answer & Explanation Answer: C) Behind the mirror

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Q:

A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/sq.s)

A) 0J B) 200J
C) 400J D) 100J
 
Answer & Explanation Answer: A) 0J

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