Physics Questions

Q:

What is the SI unit of frequency?

A) Newton B) Watt
C) Farad D) Hertz
 
Answer & Explanation Answer: D) Hertz

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Q:

Find the work done (in J) when a charge of 24 C moves across a potential difference of 6 V.

A) 4 B) 72
C) 8 D) 144
 
Answer & Explanation Answer: D) 144

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Q:

If the Distance-Time graph is a straight inclined line then it represents _______________.

A) uniform speed B) non-uniform speed
C) constant displacement   D) non-uniform velocity
 
Answer & Explanation Answer: A) uniform speed

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Q:

The SI unit of resistance is:

A) Newton B) Coulomb
C) Ohm D) Joule
 
Answer & Explanation Answer: C) Ohm

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Q:

Find the resistance (in mega ohm) of a wire of length 8 m, cross sectional area 2 sq.cm and made of a material of resistivity 120 ohm m.

A) 1920 B) 4.8
C) 2.4 D) 960
 
Answer & Explanation Answer: B) 4.8

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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:

Find the power of a convex lens if the image formed is at a distance of 16 cm from the lens when the object is placed on the other side of the lens at 20 cm from the optical centre?

A) -3.75 diopters B) -11.25 diopters
C) 3.75 diopters D) 11.25 diopters
 
Answer & Explanation Answer: D) 11.25 diopters

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Q:

If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?

A) 0 m/s B) 4.9 m/s
C) 14.7 m/s D) 20 m/s
 
Answer & Explanation Answer: A) 0 m/s

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