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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Q:

With reference to gravity, what is G called?

A) Gravitational constant	B) Gravitational attraction
C) Gravitational force	D) Acceleration due to gravity

Answer & Explanation Answer: A) Gravitational constant

Explanation:

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Q:

An object is placed on the principal axis of a cortex lens of focal length 10 cm. If the distance of the object from the lens is 30 cm, what is the distance of the image formed?

A) 20 cm	B) 15 cm
C) 30 cm	D) 10 cm

Answer & Explanation Answer: B) 15 cm

Explanation:

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Q:

Which among the following country exited from Trans Pacific Partnership (TTP) in Jan 2017 ?

A) Japan	B) USA
C) Mexico	D) Brunei

Answer & Explanation Answer: B) USA

Explanation:

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Q:

Which of the following is the most abundant metal on Earth's crust?

A) Magnesium	B) Iron
C) Copper	D) Aluminium

Answer & Explanation Answer: D) Aluminium

Explanation:

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Q:

Musa paradisiaca is the scientific name of which plant?

A) mango	B) wheat
C) Corn	D) banana

Answer & Explanation Answer: D) banana

Explanation:

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Q:

Who administers the oath of the President of India?

A) Governor General of India	B) Chief Justice of India
C) Prime Minister of India	D) Vice President of India

Answer & Explanation Answer: B) Chief Justice of India

Explanation:

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Q:

The World's largest island is

A) Greenland	B) Iceland
C) New Guinea	D) Madagascar

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