What is the standard room temperature in Kelvin?

Q:

Two identical resistors of 20 ohm each are connected in parallel. This combination, in turn, is connected to a 10 ohm resister. The equivalent resistance of the combination will be

A) 30 ohm	B) 10 ohm
C) 5 ohm	D) 20 ohm

Answer & Explanation Answer: A) 30 ohm

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0 658

Q:

A good cricket fielder while catching a fast moving ball moves his hand along with the ball because ___.

A) He decreases the time of contact therefore increasing the force of contact	B) He increases the time of contact thereby reducing the force of contact
C) He is afraid to take the ball and thus takes his hand out.	D) He decreases the time of contact therefore reducing the force of contact

Answer & Explanation Answer: B) He increases the time of contact thereby reducing the force of contact

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Q:

Light can travel ___ km in a year.

A) 5 billion	B) 10 billion
C) 5 trillion	D) 10 trillion

Answer & Explanation Answer: D) 10 trillion

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2 720

Q:

$1 k W h =__________\times 10^{6} J .$

A) 36	B) 3.6
C) 6.4	D) 64

Answer & Explanation Answer: B) 3.6

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1 13207

Q:

Calculate the pressure (in Pa) if a thrust of 1000 N is applied to an area of 5 sq.m.

A) 200	B) 50
C) 100	D) 25

Answer & Explanation Answer: A) 200

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1 32619

Q:

Which of the following electromagnetic waves has minimum wavelength?

A) Alpha	B) Gamma
C) Infrared	D) X-rays

Answer & Explanation Answer: B) Gamma

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2 14554

Q:

____________ is defined as the rate of doing work.

A) Energy	B) Force
C) Power	D) momentum

Answer & Explanation Answer: C) Power

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1 27972

Q:

Calculate the pressure (in Pa) if a thrust of 750 N is applied to an area of 5 m2.

A) 37.5	B) 150
C) 75	D) 100

A) 98 K	B) 198 K
C) 273 K	D) 373 K

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