Physics Questions

Q:

When body is accelerated--

A) Its velocity never changes. B) Its speed will always change.
C) Its direction always changes. D) Its speed may or may not change.
 
Answer & Explanation Answer: D) Its speed may or may not change.

Explanation:

Uniform circular motion, that is constant speed along a circular path, is an example of a body experiencing acceleration resulting in velocity of a constant magnitude but the change of direction

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Q:

With reference to gravity, what is G called?

A) Gravitational constant B) Gravitational attraction
C) Gravitational force D) Acceleration due to gravity
 
Answer & Explanation Answer: A) Gravitational constant

Explanation:
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Q:

A solar eclipse occurs when

A) moon comes in the middle of sun and earth B) sun comes in the middle of moon and earth
C) earth comes in the middle of moon and sun D) All of the above
 
Answer & Explanation Answer: A) moon comes in the middle of sun and earth

Explanation:

A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. Solar eclipses happen when the New Moon comes between the Sun and Earth and blocks out the Sun's rays.

 

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Q:

Work done by a passenger standing on a platform holding a suitcase weighing 10kg is

A) 980 J B) 98 J
C) 0 J D) 100 J
 
Answer & Explanation Answer: C) 0 J

Explanation:
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Q:

Blood pressure is measured by _______.

A) Barometer B) Sphygmomanometer
C) Hydrometer D) Thermometer
 
Answer & Explanation Answer: B) Sphygmomanometer

Explanation:
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Q:

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

A) 3750 B) 7500
C) 1875 D) 5000
 
Answer & Explanation Answer: A) 3750

Explanation:
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Q:

The velocity of light in vacuum is

A) 3 x 108 m/s B) 2 x 108 m/s
C) 3 x 107 m/s D) 3 x 106 m/s
 
Answer & Explanation Answer: A) 3 x 108 m/s

Explanation:
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Q:

'Gallon' is commonly used

A) To refer to speed B) To refer to a container
C) As a measure of volume D) To express containers in terms of barrel
 
Answer & Explanation Answer: C) As a measure of volume

Explanation:
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