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Q:

Masses of stars and galaxies are usually expressed in terms of

A) neutron mass B) earth's mass
C) solar mass D) lunar mass
 
Answer & Explanation Answer: C) solar mass

Explanation:
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Q:

The minimum number of Non zero non collinear vectors required to produce a zero vector is

A) 3 B) 2
C) 4 D) 1
 
Answer & Explanation Answer: A) 3

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Q:

Distance of stars are measured in

A) Galactic unit B) seller mile
C) Cosmic Kilometre D) Light year
 
Answer & Explanation Answer: D) Light year

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Q:

Which of the following is a vector quantity

A) momentum B) pressure
C) Energy D) work
 
Answer & Explanation Answer: A) momentum

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Q:

Which of the following is not a vector quantity?

A) speed B) velocity
C) torque D) displacement
 
Answer & Explanation Answer: A) speed

Explanation:

Which_of_the_following_is_not_a_vector_quantity1552385336.png image

A vector quantity is a quantity which has both magnitude and direction. Here in the given options, speed is a scalar quantity but not the vector quantity.

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Q:

Which of the following is a scalar quantity

A) electric current B) electric field
C) Acceleration D) linear momentum
 
Answer & Explanation Answer: A) electric current

Explanation:

A Scalar quantity is a quantity that has only magnitude but no direction as like vector. 

Here in the given options, electric current is the only one which is scalar.

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Q:

Which of the following is a scalar quantity

A) Displacement B) Electric field
C) Acceleration D) work
 
Answer & Explanation Answer: D) work

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Q:

Which one of the following groups have quantities that do not have the same dimensions

A) pressure, stress B) velocity, speed
C) force, impulse D) work, energy
 
Answer & Explanation Answer: C) force, impulse

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