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Q:

The SI unit of weight is a

A) Kg B) Newton
C) Gram D) Dyne
 
Answer & Explanation Answer: B) Newton

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Q:

For what is Radiocarbon dating technique used?

A) To estimate soil contamination B) To estimate the amount of water in fossils
C) To estimate the age of fossils D) To estimate the quality of soil
 
Answer & Explanation Answer: C) To estimate the age of fossils

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Q:

Sensitivity of potentiometer can be increased by

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

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Q:

Which of the following is not a renewable source of energy?

A) Solar B) Wind
C) Ocean waves D) Coal
 
Answer & Explanation Answer: D) Coal

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Q:

Velocity of a car does not depend on

A) Speedometer B) Change in direction
C) Change in speed D) Change in acceleration
 
Answer & Explanation Answer: A) Speedometer

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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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Q:

Find the resistance (in mega Ω) of a wire of length 10 m, cross sectional area 1 cm2 and made of a material of resistivity 100 Ωm.

 

A) 1000   B) 20  
C)  500   D) 10
 
Answer & Explanation Answer: D) 10

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Q:

Which of the following does NOT contribute to sparkling of diamonds?

A) Total Internal Reflection B) High Refractive Index of Diamonds
C) Dispersion D) Low Refractive Index of Diamonds
 
Answer & Explanation Answer: D) Low Refractive Index of Diamonds

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