Physics Questions

Q:

Sensitivity of potentiometer can be increased by

A) increasing the length of the potentiometer wire B) increasing the e.m.f of the cell
C) decreasing the length of the potentiometer wire D) none of these
 
Answer & Explanation Answer: A) increasing the length of the potentiometer wire

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Q:

What of the given below devices converts chemical energy to electrical energy?

A) Transformer B) Battery
C) Electric Generator D) Wheel
 
Answer & Explanation Answer: B) Battery

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Q:

The acceleration due to gravity at the surface of the earth (mass M and radius R) is proportional to ___.

A) MR B) M/R2
C) M2/R D) M/R
 
Answer & Explanation Answer: B) M/R2

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Q:

What does the symbol R in electricity stand for ?

A) Resistance B) Resonance
C) Refraction D) Rarefaction
 
Answer & Explanation Answer: A) Resistance

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Q:

Who does not the kinetic energy of an object increase with?

A) Friction B) Time
C) Mass D) Speed
 
Answer & Explanation Answer: D) Speed

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Q:

What is the measure of temperature considered as normal in human body?

A) 95 deg F B) 97 deg F
C) 98.6 deg F D) 96.8 deg F
 
Answer & Explanation Answer: C) 98.6 deg F

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Q:

___ is not related to gases.

A) Boyle's Law B) Joule's Law
C) Avogadro's Law D) Charle's Law
 
Answer & Explanation Answer: B) Joule's Law

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Q:

A charge of 2 C passes from one point to the other in a circuit. If the potential difference between the two points is 5 V, the amount of work done is

A) 5 J B) 10 J
C) 2.5 J D) 0.4 J
 
Answer & Explanation Answer: B) 10 J

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