Physics Questions

Q:

The resistance of a conductor is inversely proportional to its:

A) length B) resistivity
C) temperature D) area of cross section
 
Answer & Explanation Answer: D) area of cross section

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2 1968
Q:

Which one of the following is the correct sequence of passage of light in a compound microscope?

A) Condenser -Objective lens -Eye -piece -Body tube B) Objective lens -Condenser -Body tube -Eye piece
C) Condenser -Objective lens -Body tube -Eyepiece D) Eyepiece -Objective lens -Body tube -Mirror
 
Answer & Explanation Answer: C) Condenser -Objective lens -Body tube -Eyepiece

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2 1968
Q:

The power of an earthquake is expressed in terms of a magnitude on a scale called __________ scale.

A) Schmitt B) Hutton
C) Werner D) Richter  
 
Answer & Explanation Answer: D) Richter  

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1 1968
Q:

A person lifts luggage of 20 kg from the ground and puts it on his head 2 in above the ground. Calculate the work done by him. (g = l0 )

A) 20 J B) 400J
C) 200J D) 40J
 
Answer & Explanation Answer: B) 400J

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0 1965
Q:

For photoelectric effect to take place, the metal used as the cathode should have_________

A) high melting point B) low melting point
C) Low work function D) low resistance
 
Answer & Explanation Answer: C) Low work function

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2 1963
Q:

What is the other name of Galileo's law of falling bodies?

A) Law of motion B) Newton's first law
C) Newton's second law D) Newton's third law
 
Answer & Explanation Answer: B) Newton's first law

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1 1962
Q:

A particle is thrown vertically upward. When it reaches the highest point, it has ____________

A) a downward acceleration B) an upward acceleration
C) a downward velocity D) a horizontal velocity
 
Answer & Explanation Answer: A) a downward acceleration

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3 1958
Q:

_____________________ states that the total current entering a junction is equal to the total current leaving the junction.

A) Lenz's Law B) Hooke's Law
C) Ohm's Law D) Kirchhoff's First Law
 
Answer & Explanation Answer: D) Kirchhoff's First Law

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1 1956