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Q:

What is the escape velocity of the rocket in the earth is?

A) 12.2 km/sec B) 10.2 km/sec
C) 13.2 km/sec D) 11.2 km/sec
 
Answer & Explanation Answer: D) 11.2 km/sec

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Q:

As the object covers unequal distances in equal intervals of time, it is said to be in ____________ motion.

A) uniform B) linear
C) non-uniform D) equilibrium
 
Answer & Explanation Answer: C) non-uniform

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Q:

In spherical polar coordinates (l, q, a), q denotesthe polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

A) Psinq sina B) Psinq cosa
C) Pcosq sina D) Pcosq cosa
 
Answer & Explanation Answer: A) Psinq sina

Explanation:

The Cartesian Coordinates can be retrieved from spherical coordinates (l,q,a) by:

X = r.sinq.cosa

Y = r.sinq.sina

Z = r.sinq

Using the same we get for P,

Y = P.sinq.sina

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Q:

What is the unit of the physical quantity "Inductance"?

A) weber B) farad
C) henry D) tesla
 
Answer & Explanation Answer: C) henry

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Q:

The numerical value of a physical quantity is its _______________.

A) vector B) magnitude
C) direction D) property
 
Answer & Explanation Answer: B) magnitude

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Q:

The frictional force exerted by fluids is also called ________.

A) drag B) buoyancy
C) upthrust D) convection
 
Answer & Explanation Answer: A) drag

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Q:

On which principle does the hydraulic lift works?

A) Newton's law B) Pascal's law
C) Archimedes's law D) Joule's law
 
Answer & Explanation Answer: B) Pascal's law

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Q:

What is the unit of the physical quantity "Young's modulus"?

A) newton B) erg
C) joule D) pascal
 
Answer & Explanation Answer: D) pascal

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