Question # 1

The property of bending of light around obstacles is

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Interference

Diffraction

Polarization

Superposition

Value of triple point of water is given as.

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Zero K

100 K

273.16 K

373.16 K

Inertia may expressed in

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Kg

Newton

Watt

Joule

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

Which one of the following force cannot do any work on the particle on which it acts.

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Fractional force

Gravitational force

Electrostatic force

Centripetal force

The value of of 'g' at the centre of the earth is

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Infinite

2 g

3 g

zero

The device used to study the spectra from different sources of light is

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Telescope

Optical fibre

Spectrometer

Microscope

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

If a body of mass 5 kg is raised vertically through a distance of 1 m, then work done is.

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49 J

4.9 J

490 J

0.49 J

According to Newton's formula, the speed of sound in air at STP is

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332 ,ms-1

340 ms-1

350 ms-1

280 ms-1

The internal energy of system does not depend on

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Temperature

Pressure

Path

Final and initial state

The direction of vector in space is specified by

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1- angle

2- angle

3- angle

4 - angle

In case of planets centripetal force is provided by

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Coulomb's force

Electrostatic force

Gravitational force

Magnetic force

How many orbiting satellites from the Global positing system.

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3

12

24

22

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

A paratooper moves downward with

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Zero acceleration

Constant acceleration

Positive acceleration

Negative acceleration

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

The SI unit for measuring plane angle is

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Streadian

Radian

Both a and B

None of these

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