Question # 1

Inertial frame of references are those frame of references which are moving with

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increasing velocity

decreasing velocity

constant velocity

all of them

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

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Energy, momentum and mass

Energy

Energy and mass

Energy and linear momentum

When body moves along a circular path with constant speed, it has an acceleration, which is always directed;

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Along the tangent

Towards the centre

Away from the centre

None of them

While describing the motion of a simple pendulum, the frictional effects are

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taken into account

completely ignored

partially ignored

none of them

Centripetal acceleration is also called ______ acceleration:

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Tangential

Radial

Angular

None of them

The Einstein's changes in length, mass and time are not observed in common life because

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We dont observer then seriously

The masses are too large

Their speed is too small than the speed of right

All of the above

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

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Zero

10Ω

1Ω

0.10Ω

As the light shines on the metal surface, the electrons are ejected

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slowly

instantaneously

either of these

none of these

magnetic field is a:

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Vector quantity

Scalar quantity

Scalar as well as scalar quantity

Any of (A) or (B)

Neither (A) nor (B)

One torr is equal to

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13.33 N/m²

760 N/m²

760 mm Hg

133.3 N/m²

A circuit has a resistance of 11Ωan inductive reactance of 25Ωand a capacitance reactance of 18Ω. It is connected to an a.c. source of 200 V and 50 Hz. The current through the circuit (in amperes) is

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11

15

18

20

The whole structure obtained by the repetition of unit cells is called:

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Crystal lattice

Amorphous solid

Polymeric solid

Polystrene

None of these

Can a vector have a component greater than the vectors magnitude ?

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yes

No

yes in some cases

None of these

Angular momentum of a particle is

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Parallel to its linear momentum

Perpendicular to its linear momentum

Inclined to its linear momentum

A scalar quantity

Which of the particles, electron, proton and neutron moving with same speed has longest wave length?

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Electron

Proton

Neutron

All have same

What is the weight of a 700 g of body on a planet whose mass is 1/7th of that of earth and radius is 1/2 of earth?

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400 gf

300 gf

700 gf

500 gf

The physical sciences deals with

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Living things

Non-living things

Both

None of these

One cannot see through fog because

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Fog absorbs light

The refractive index of fog is infinity

Light suffers total reflection at the droplet in a fog

Light is scattered by the droplets in fog

Electric field force per unit charge is

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Coulomb's force

Electric intensity

Gauss's Law

None of these

At higher temperature their vibrations become so great that structure suddenly breaks up and changes into

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Order to disorder

Solid into liquid

Melted

All of them

Demension of torque is

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MLT^-2

ML²T^-1

ML²T^-2

ML²T²

If there were no intermolecular forces between gas molecules, the pressure due to a given sample a gas will be

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Increased

Decreased

Unchanged

None of these

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