Q:

Which one of the following statements is not correct?

A) The response of the ear to sound of increasing intensity is approximately logarithmic.	B) The sensitivity of the human ear does not vary with the frequency of the sound.
C) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.	D) Longitudinal waves can travel in all media-solids, liquids and gases.

Answer & Explanation Answer: B) The sensitivity of the human ear does not vary with the frequency of the sound.

Explanation:

The human ear can respond to minute pressure variations inthe air if they are in the audible frequency range, roughly 20 Hz -20 kHz. In fact, tests conducted show an increased sensitivity in the 3000 Hz range which is the optimal amplification frequency in the human ear. So, the sensitivity of the human ear varies with the frequency of the sound.

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

In the equation of motion $2 as = v^{2} - u^{2}$ , s represents _________________.

A) speed	B) displacement
C) velocity	D) acceleration

Answer & Explanation Answer: B) displacement

Explanation:

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Filed Under: Physics
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Q:

The United Nations has designated which year as World Population Year?

A) 1977	B) 1974
C) 1990	D) 1985

Answer & Explanation Answer: B) 1974

Explanation:

The United Nations has designated 1974 as World Population Year, and has called upon all governments and peoples to participate in its observance.

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Filed Under: Important Days and Years
Exam Prep: Bank Exams

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Q:

If $4 x^{2} - 12 x + k$ is a perfect square, then the value of k is

A) 9	B) 12
C) 10	D) 14

Answer & Explanation Answer: A) 9

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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Q:

If $x^{4} + \frac{1}{x^{4}} = 119,$ then the value of $x - \frac{1}{x}$ is

A) 6	B) 12
C) 11	D) 3

Answer & Explanation Answer: D) 3

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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Q:

Sultan Mahmud was a ruler of_____.

A) Persia	B) Ghazni
C) Lahore	D) Arab

Answer & Explanation Answer: B) Ghazni

Explanation:

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Filed Under: Indian History
Exam Prep: Bank Exams

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Q:

Battle of Plassey was fought in ______.

A) 1657	B) 1707
C) 1757	D) 1807

Answer & Explanation Answer: C) 1757

Explanation:

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Filed Under: Indian History
Exam Prep: Bank Exams

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Q:

Who is the author of "Life of Pi"?

A) Eleanor Catton	B) Aravind Adiga
C) Yann Martel	D) Kiran Desai

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