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Q & A<br />

@physics<br />

2018<br />

asst June<br />

top Gear<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

Q<br />

caring for all life under the Sun<br />

What are collinear vectors?<br />

A. a set of vectors with parallel supports<br />

Working Principle of a Transformer?<br />

A. Mutual induction<br />

The device that converts light energy into electric<br />

energy?<br />

A. photo tube<br />

What is the value of Planck’s constant?<br />

A. 6.6 x 10 -27 erg sec<br />

What is the rest mass of photon?<br />

A. Zero<br />

Forbidden gap in insulators?<br />

A. 6 eV<br />

Electronic component used as rectifier?<br />

A. Diode<br />

Mechanical advantage of 2 nd order levers?<br />

A. Greater than one<br />

In Boolean Algebra, the term OR is represented by?<br />

A. +<br />

Most commonly used device for demodulation?<br />

A. Superheterodyne receiver<br />

The electronic reproduction of a document at a distance<br />

is known as?<br />

A. fascimile telegraphy (fax)<br />

Range of Super High Frequency Band (SHF)?<br />

A. 3 Ghz - 30 Ghz<br />

What are sky waves?<br />

A. radiowaves with frequency (2Mhz - 30<br />

Mhz)<br />

Name an Indian Remote Sensing Satellite?<br />

A. irS - 1a, 1B, 1c<br />

Father of Fiber Optics?<br />

A. narinder Singh kapany<br />

Who invented Laser?<br />

A. theoder Maiman<br />

Q<br />

Q<br />

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Q<br />

‘One mole’ is given by?<br />

Deepika<br />

A. 6.022 x 10 23 atoms<br />

Measurement of quantities of heat is refered as?<br />

A. calorimetry<br />

Device that converts Heat energy to Mechanical<br />

energy?<br />

A. heat engine<br />

The phenomenon of transferring energy from place to<br />

place by means of electromagnetic waves?<br />

A. radiation<br />

What is the SI Unit of coefficient of Thermal Conductivity?<br />

A. wm -1 k -1<br />

Who proposed the law of cooling?<br />

A. newton<br />

Give the value of Solar Constant?<br />

A. 1388 watt/m 2<br />

Working principle of a spring?<br />

A. hooke’s Law<br />

What is second’s Pendulam?<br />

A. pendulam whose periodic time is 2 sec<br />

Sound is a --------- wave?<br />

A. Longitudinal<br />

As wave length increases, frequency of the wave?<br />

A. Decreases<br />

Practical Unit of Sound Intensity?<br />

A. Decibel (dB)<br />

Quality of sound is known as?<br />

A. timbre<br />

Accepted pain threshold of Sound Intensity?<br />

A. 10 -4 w/cm 2<br />

‘Dynamo Effect’ was proposed by?<br />

A. faraday<br />

Strongest force in nature?<br />

A. nuclear force<br />

Q&A Bonus<br />

The Pen name of Lord Lytton - owen Meredith<br />

27

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