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Q:

Two particles with charges q1 and q2 are kept at a certain distance to exert force F on each other. If the distance is reduced to one-fifth, then the force between them is

A) F/25 B) 5F
C) F/5 D) 25F
 
Answer & Explanation Answer: D) 25F

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Q:

The pressure inside the cabin of the aircraft flying at an altitude is

A) The same as that outside B) Less than that outside
C) More than that outside D) Normal atmospheric pressure at sea level
 
Answer & Explanation Answer: C) More than that outside

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Q:

What will be the resistance of a wire across which, when 2V potential difference is applied, 1A current flows through the wire?

A) 2 ohms B) 0.02 ohms
C) 0.5 ohms D) 20 ohms
 
Answer & Explanation Answer: A) 2 ohms

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Q:

Light can travel ___ km in a year.

A) 5 billion B) 10 billion
C) 5 trillion D) 10 trillion
 
Answer & Explanation Answer: D) 10 trillion

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Q:

The Brownian Motion was discovered by

A) Robert Brown B) Mandel Brown
C) Isaac Newton D) John Brown
 
Answer & Explanation Answer: A) Robert Brown

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Q:

An object having a mass 'm' moving with a velocity 'v' possesses a kinetic energy 'K'. If its velocity is doubled, its kinetic energy will become:

A) K/2 B) 2K
C) 4K D) K/4
 
Answer & Explanation Answer: C) 4K

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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:

The second equation of motion gives the relation between

A) Velocity and time B) Position and velocity
C) Position and time D) Velocity and acceleration
 
Answer & Explanation Answer: C) Position and time

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