Physics Questions

Q:

Which of the following is used to detect current in a circuit?

A) Galvanometer B) Anemometer
C) Barometer D) Lactometer
 
Answer & Explanation Answer: A) Galvanometer

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Q:

In which of the following mentioned activities is the potential energy (P.E) converted into kinetic energy(K.E)?

A) The explosion of a fire cracker B) The switching on of a torch
C) The switching off of a torch D) The swinging of a pendulum
 
Answer & Explanation Answer: D) The swinging of a pendulum

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Q:

Consider a hypothetical planet with a mass equal to half that of Earth and radius is one-third that of Earth. If g is the acceleration due to gravity on Earth, the acceleration due to gravity on the planet will be

A) (1/2)g B) (9/2)g
C) (5/2)g D) (3/2)g
 
Answer & Explanation Answer: B) (9/2)g

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Q:

What is the value of acceleration due to gravity on the surface of the earth?

A) 9.6 cm/s2 B) 9.8 m/s2
C) 10.8 m/s2 D) 9.8 cm/s2
 
Answer & Explanation Answer: B) 9.8 m/s2

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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:

An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?

 

A) 513 m B) 644 m
C) 342 m D) 171 m
 
Answer & Explanation Answer: A) 513 m

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Q:

If two coulomb of charge flows through any cross-section of a conductor in one second, what will be the current flowing through it?

A) 1 Ampere B) 1/2 Ampere
C) 1/4 Ampere D) 2 Amperes
 
Answer & Explanation Answer: D) 2 Amperes

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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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