Question # 1

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

Which of the following is the derived quantity.

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Time

Length

Area

Mass

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

When a fore of 100 N is acting on an object along x-axis then its vertical component will be.

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50 N

0 N

25 N

10 N

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

The magnifying power is also called

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Resolving power

Angular magnification

Strength of eye

None of these

In which medium the speed of sound is greater.

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Oxygen

Air

Water

copper

The K.E. of bullet of mass 500 gm moving at a speed of 200 ms-1

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250 J

125 J

2500 J

10,000 J

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

The difference between tow molar capacities is equal to.

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Plank's constant

General gas equation

Molar gas constant

Boltzmann constant

Horizontal range is maximum when the angle of projectile is.

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0 o

30 o

45 o

60 o

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

The velocity of a projectile is maximum

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At the highest point

At point of launching and just before striking the ground

At half of the height

After striking the ground

The SI unit of intensity of light is

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Joule

Mole

Candila

Kilomole

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

Experimentation and practical verification was fist indroduced by

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The Muslim Scientists

The Greek philosopher

The European scientsts

None of these

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

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