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Q:

Find the work done (in J) when a charge of 24 C moves across a potential difference of 6 V.

A) 4 B) 72
C) 8 D) 144
 
Answer & Explanation Answer: D) 144

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Q:

What is the phenomenon which established the transverse nature of light ?

A) Reflection B) Interference
C) Diffraction D) Polarisation
 
Answer & Explanation Answer: D) Polarisation

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Q:

In a sound wave compressions are regions where density _________________________

A) as well as pressure is high B) as well as pressure is low
C) is high and pressure is low D) is low and pressure is high
 
Answer & Explanation Answer: A) as well as pressure is high

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Q:

Women have shrill voice because of _______.

A) Low frequency B) High frequency
C) Shrill vocals D) Strong epiglottis
 
Answer & Explanation Answer: B) High frequency

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Q:

Nautical miles is a unit of distance used in

A) Navigation B) Road mile
C) Astronomy D) Measuring the boundaries of a nation
 
Answer & Explanation Answer: A) Navigation

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Q:

What is the SI unit of intensity of sound?

A) Decible B) Newton
C) Heartz D) Tesla
 
Answer & Explanation Answer: A) Decible

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Q:

The force which makes a vehicle to stop when break is applied is called

A) gravitational force B) vander­walls force
C) frictional force D) co­valant force
 
Answer & Explanation Answer: C) frictional force

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Q:

The bending of light when it passes around a corner or a slit is due to ______.

A) reflection B) refraction
C) diffraction D) total internal reflection
 
Answer & Explanation Answer: C) diffraction

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