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Q:

European Turkey is separated from its Asian part by

A) Straits of Bosporus B) Sea of Marmara
C) Straits of Dardanelles D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Filed Under: World Geography

Q:

Which of these places lies nearest to the Equator?

A) Singapore B) Lagos
C) Colombo D) Jakarta
 
Answer & Explanation Answer: A) Singapore

Explanation:
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Filed Under: World Geography

Q:

When an electric bulb breaks , there is an explosive sound. That is due to

A) the chemical reaction between the gases inside the bulb B) the compressed gases inside rushing out suddenly
C) the air outside rushing in to fill the vacuum inside the bulb D) None of these
 
Answer & Explanation Answer: C) the air outside rushing in to fill the vacuum inside the bulb

Explanation:

The inside of the bulb being a vacuum, the outside air rushes in when the bulb is broken. The vibrations of the rushing air molecules produce the sound.

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Filed Under: Physics

Q:

An integrated circuit is more advantages than a coventional circuit because 

A) they make the electric equipments more reliable and easier for servicing B) a faulty part of a conventional circuit may be difficult to locate and repair
C) if a part of the integrated circuit fails the entire circuit is simply replaced D) all the above
 
Answer & Explanation Answer: D) all the above

Explanation:

Integrated circuit (IC) is a tiny device that controls electric signals in such electronic equipments as computers and T.V sets. Many integrated circuits contain thousands of electronic parts on a paper - thin chip of silicon. These parts include capacitors, diodes, all in a very small, compact space.

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Filed Under: Physics

Q:

When two similar sources vibrate with slightly different frequencies , a regular rise and fall occurs in the loudness of tone. This phenomenon is known as 

A) doppler effect B) beats
C) resonance D) echo
 
Answer & Explanation Answer: B) beats

Explanation:

Beats means the periodic increase and decrease in loudness heard when two notes of nearly the same frequency are sounded simultaneously.

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Filed Under: Physics

Q:

The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because  

A) the ringing is not loud enough B) the glass of the bell jar absorbs the sound waves
C) the bell jar is too small D) there is no air or any other gas in the bell jar
 
Answer & Explanation Answer: D) there is no air or any other gas in the bell jar

Explanation:

As there is no medium inside the bell jar, sound cannot travel

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Filed Under: Physics

Q:

When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is

A) the violet ray B) the red ray
C) the green ray D) the blue ray
 
Answer & Explanation Answer: B) the red ray

Explanation:

Red is deviated the least and violet the most

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Filed Under: Physics

Q:

Formation of shadows can be explained by 

A) rectilinear propagation of light B) reflection
C) refraction D) total internal reflection
 
Answer & Explanation Answer: A) rectilinear propagation of light

Explanation:

In this position, the head light will be at the principal focus so that the rays of light falling on the cancave mirror will be rendered parallel

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Filed Under: Physics