Questions

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:

Prince Khurram was the name of the future Emperor __________.

A) Shah Jahan B) Jahangir
C) Babur D) Akbar
 
Answer & Explanation Answer: A) Shah Jahan

Explanation:
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Filed Under: Indian History
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Q:

Who discovered Potassium?

A) Humphry Davy B) Alan Turing
C) Bill Gates D) Tim Berners-Lee
 
Answer & Explanation Answer: A) Humphry Davy

Explanation:
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Filed Under: Inventions
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Q:

Who was the first Englishman to appear in the Mughal Court during Jahangir's reign?

A) Paul Canning B) Captain William Hawkins
C) William Edward D) Ralph Fitch
 
Answer & Explanation Answer: B) Captain William Hawkins

Explanation:
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Filed Under: Indian History

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Q:

Who is the Author of the book titled “The Making of Aadhaar: World’s Largest Identity Platform”

A) Ram Sewak Sharma B) AK Sikri
C) Kris Gopalkrishnan D) Jai Shankar
 
Answer & Explanation Answer: A) Ram Sewak Sharma

Explanation:
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Filed Under: Books and Authors
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Q:

In the following question, select the related letters from the given alternatives.

NPBG : OQCH : : AJOT : ?

A) BKPU B) BUPK
C) BHKP D) HBKU
 
Answer & Explanation Answer: A) BKPU

Explanation:
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Q:

If sin8 θ + cos8 θ  1 = 0, then what is the value of cos2 θ sin2 θ (If θ ≠ 0 or π/2)?

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

Explanation:
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Q:

The side BC of the ΔABC is extended to the point D. If ∠ ACD = 112° and ∠B = 3/4 ∠A, then the value of ∠B is

A) 64° B) 48°
C) 46° D) 50°
 
Answer & Explanation Answer: B) 48°

Explanation:
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