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Q:

Which glass is used to make spectacles?

A) Crook's glass B) Potash glass
C) Jena glass D) Soda glass
 
Answer & Explanation Answer: A) Crook's glass

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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:

When the vibrating object moves forward, it creates a region of high pressure in the medium called ______.

A) dilation B) compression
C) relaxation D) negation
 
Answer & Explanation Answer: B) compression

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Q:

In which of the following situations is mechanical energy most likely to be conserved?

A) A feather falls from the sky. B) A football flies through the air.
C) A hockey player digs his skates into the ice. D) A skateboard rolls into the grass.
 
Answer & Explanation Answer: B) A football flies through the air.

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Q:

What does the slope of a velocity time graph represent?

A) Acceleration B) Distance
C) Speed D) Momentum
 
Answer & Explanation Answer: A) Acceleration

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Q:

At what temperature (in Fahrenheit) pure water freezes?

A) 32 B) 0
C) 48 D) 37
 
Answer & Explanation Answer: A) 32

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Q:

What is the unit of resistance?

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

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Q:

Choose the most appropriate answer:Natural radioactivity was discovered by

A) Marie Curie B) Earnest Rutherford
C) Henry Bacquerel D) Enrico Fermi
 
Answer & Explanation Answer: C) Henry Bacquerel

Explanation:

Natural radioactivity was discovered by Henri Bacquerel.

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