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Q:

The increasing order of the refractive index of certain materials is (left to right) .......

A) Rocksalt, Benzene, Kerosene, Ice B) Rock Salt, Ice, Benzene, Kerosene
C) Ice, Kerosene, Benzene, Rock Salt D) Kerosene, Ice, Benzene, Rock Salt
 
Answer & Explanation Answer: C) Ice, Kerosene, Benzene, Rock Salt

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Q:

Which motion has magnitude of static frictional force directly proportional to normal reaction?

A) Impending motion B) Actual motion
C) Both 1 and 2 D) None of the above
 
Answer & Explanation Answer: A) Impending motion

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Q:

To convert temperature from Celcius to Kelvin scale, you must ___ the given temperature.

A) subtract 273 B) multiply 273
C) add 273 D) divide by 273
 
Answer & Explanation Answer: C) add 273

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Q:

If the velocity of a body is halved its kinetic energy ________________.

A) become 4 times B) becomes 1/4 th
C) is also doubled D) becomes half
 
Answer & Explanation Answer: B) becomes 1/4 th

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Q:

What is the viscosity of an ideal fluid?

A) Equal to its mass B) Equal to its weight
C) Zero D) One
 
Answer & Explanation Answer: C) Zero

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Q:

What is the SI unit of temperature?

A) Kelvin B) Joule
C) Celsius D) Fahrenheit
 
Answer & Explanation Answer: A) Kelvin

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Q:

If the force applied on the object is in the direction opposite to the direction of motion, the speed of the object __________.

A) increases B) stops
C) decreases D) no effect
 
Answer & Explanation Answer: C) decreases

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Q:

At what temperature (in degree celsius), the numerical values on Celsius and Fahrenheit scales become equal?

A) –40 B) 40
C) 273 D) -273
 
Answer & Explanation Answer: A) –40

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