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Q:

A  photon  of  X-ray  has  energy  of  1  keV.  A photon of visible radiation has energy of 3 eV.  In  this  context,  which  one  of  the following statements is not correct?

A) The wavelength of X-ray photon is less than the wavelength of visible radiation photon. B) Both    the    photons    have    different energies.
C) The  speeds  of  both  the  photons  in vacuum are different D) The   frequency   of   X-ray   photon   is higher  than  the  frequency  of  visible radiation photon.
 
Answer & Explanation Answer: C) The  speeds  of  both  the  photons  in vacuum are different

Explanation:

The speed of all the electromagnetic radiation are always   same   and   equal   to   the numerical value 3 x 10^8m/sec.

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Filed Under: Physics
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Q:

Alps mountain range is located in which continent?

A) Europe B) North America
C) South America D) Africa
 
Answer & Explanation Answer: A) Europe

Explanation:
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Filed Under: World Geography
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Q:

The boundary between Earth's crust and mantle is _____.

A) Moho discontinuity B) Lehman discontinuity
C) Conrad discontinuity D) Gutenberg discontinuity
 
Answer & Explanation Answer: A) Moho discontinuity

Explanation:
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Filed Under: General Science
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3 981
Q:

Which of the following errors are identified by the compiler?

A) Logical Errors B) Hardware Errors
C) Language Errors D) Image Errors
 
Answer & Explanation Answer: A) Logical Errors

Explanation:
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Filed Under: Computer
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Q:

Select the word with the correct spelling.

A) depictted B) brisbaane
C) fiddling D) ponderred
 
Answer & Explanation Answer: C) fiddling

Explanation:
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Filed Under: English
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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) IJKRQP B) FGHUTS
C) BCDWXY D) KLMPON
 
Answer & Explanation Answer: C) BCDWXY

Explanation:
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Filed Under: Odd Man Out
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Q:

In the following question, select the word which cannot be formed using the letters of the given word.

 

INFORMATION

 

A) NATION B) INFRA
C) RATION D) MATER
 
Answer & Explanation Answer: D) MATER

Explanation:
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Filed Under: Logical Sequence of Words
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1 981
Q:

What is the value of [tan (90  A) + cot (90  A)]2/[2 sec2(90  2A)]?

A) 0 B) 1
C) 2 D) – 1
 
Answer & Explanation Answer: C) 2

Explanation:
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Filed Under: Simplification
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