Q:

Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K?

A) K1k2/k1+k2	B) 2k1k2/k1+k2
C) K1+k2/k1k2	D) None

Answer & Explanation Answer: B) 2k1k2/k1+k2

Explanation:

We know that,

The equivalent K = $\frac{L 1 + L 2}{\frac{L 1}{K 1} + \frac{L 2}{K 2}}$

where L1 & L2 are plate1 & Plate2 thicknesses, K1 & K2 are coefficient thermal conductivity of plate1 & Plate2 respectively.

But here L1 = L2 = L (say)

Then K = L+L/(L/K1 + L/K2) = $\frac{2 K 1 K 2}{K 1 + K 2}$

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Filed Under: Physics
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12 7179

Q:

Decibel is the unit of

A) speed of light	B) intensity of sound
C) intensity of heat	D) None of these

Answer & Explanation Answer: B) intensity of sound

Explanation:

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Filed Under: Physics

15 7178

Q:

Which of the following is not a property of water?

A) Low density	B) Low specific heat
C) Low heat of vaporisation	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Water can moderate temperature because of the two properties: high-specific heat and the high heat of vaporization.

Hence, all the above given options are not the properties of water.

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4 7176

Q:

The lead character in the film ' The Bandit Queen ' has been played by

A) Shabana Azmi	B) Rupa Gangulu
C) Seema Biswas	D) Arundhati ray

Answer & Explanation Answer: C) Seema Biswas

Explanation:

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Filed Under: Books and Authors

10 7174

Q:

In plants, exchange of gases takes place through

A) Stomata	B) Palisade tissue
C) Spongy tissue	D) mid rib

Answer & Explanation Answer: A) Stomata

Explanation:

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Filed Under: Biology

48 7169

Q:

An object at rest may have

A) Momentum	B) Potential energy
C) Velocity	D) Kinetic energy

Answer & Explanation Answer: B) Potential energy

Explanation:

An object at rest may have Potential energy.

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Filed Under: Physics
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14 7168

Q:

State game of Madhya Pradesh?

A) Mallakhamba	B) Lagori
C) Kabaddi	D) Kho Kho

Answer & Explanation Answer: A) Mallakhamba

Explanation:

State_game_of_Madhya_Pradesh1552129369.jpg image

The State game of Madhya Pradesh is Mallakhamba.

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Filed Under: Indian Geography
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Q:

What are the reasons for process suspension?

Answer

swapping

interactive user request

timing

parent process request

Workspace

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Subject: Operating Systems

19 7160

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