Questions

Q:

Sensitivity of potentiometer can be increased by

A) increasing the e.m.f. of the cell B) increasing the length of the potentiometer
C) decreasing the length of the potentiometer wire D) none of these
 
Answer & Explanation Answer: B) increasing the length of the potentiometer

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Q:

What does the kinetic energy (KE) of a moving body depend upon?

A) Mass & its position B) Weight & its position
C) Mass & acceleration D) Mass & velocity
 
Answer & Explanation Answer: D) Mass & velocity

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Q:

Which is the brightest star in our night sky?

A) Canopus B) Sirius A
C) Vega D) Spica
 
Answer & Explanation Answer: B) Sirius A

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Q:

Headquarters of International Gas Union (IGU) located in

A) Geneva, Switzerland B) Barcelona, Spain
C) Paris, France D) Riyadh, Saudi Arabia
 
Answer & Explanation Answer: B) Barcelona, Spain

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Q:

The Leader of which country has been given a title of “General secretary” of the ruling Workers’ Party?

A) North Korea B) Vietnam
C) Thailand D) China
 
Answer & Explanation Answer: A) North Korea

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Q:

Mount Semeru, an active volcano, located in

A) Africa B) New Zealand
C) Indonesia D) Myanmar
 
Answer & Explanation Answer: C) Indonesia

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Q:

A rocket is launched to travel vertically upward with a constant velocity of 20 m/s. After travelling for 35 seconds, the rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. The height achieved by it is

A) 680 m B) 720 m
C) 800 m D) 700 m
 
Answer & Explanation Answer: B) 720 m

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Q:

The rate of change of velocity is called

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

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