Physics Questions

Q:

Pressure is measured in terms of

A) Mass & Density B) Work done
C) Force and Area D) Force and Distance
 
Answer & Explanation Answer: C) Force and Area

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Q:

What is the unit of the physical quantity Entropy?

A) watt per kelvin B) newton per kelvin
C) pascal per kelvin D) joule per kelvin
 
Answer & Explanation Answer: D) joule per kelvin

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Q:

Borosilicate glass wear is used in microwave oven because

A) It is not brittle B) It is highly heat resistant
C) It cooks faster than any other vessel D) It is energy efficient
 
Answer & Explanation Answer: B) It is highly heat resistant

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2 1035
Q:

To hear a distinct echo the time interval between the original sound and the reflected sound must be at least

A) 0.2 second B) 1 second
C) 0.1 second D) 2 seconds
 
Answer & Explanation Answer: C) 0.1 second

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2 1032
Q:

Which  one  of  the following  is  the  value  of one nanometer?

A) 10-7 cm B) 10-6 cm
C) 10-4  cm D) 10-3  cm
 
Answer & Explanation Answer: A) 10-7 cm

Explanation:

1 nanometer (nm) of length

Equals: 0.00000010 centimetres (cm) in length.

This is equal to 10^-7 cm.

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Q:

Through which does light travel best?

A) water B) air
C) vacuum D) none
 
Answer & Explanation Answer: C) vacuum

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Q:

The force ultimately responsible for mass movement

A) erosion B) gravity
C) deposition D) weathering
 
Answer & Explanation Answer: B) gravity

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Q:

A broadcasting station transmits waves with a frequency of 71 x 104 Hz and a speed of 3 x 108 m/s. The wavelength of the wave is

A) 324.6 m B) 422.5 m
C) 208.4 m D) 418.8 m
 
Answer & Explanation Answer: B) 422.5 m

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0 1029