Question # 1

Beta particles are

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hydrogen nuclei

helium nuclei

electrons

photons

The process which is carried out at constant temperature is known as

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adiabatic process

isothermal process

isochoric process

none of them

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

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40 km/h

48 km/h

50 km/h

60 km/h

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

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0 J

2 J

5 J

10 J

The direction of induced current is always so as to oppose the cause which produces it. This is

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Lenz's law

Ampere's law

Faraday's law

Coulomb's law

None of these

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

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Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Anitparallel to each other

In the force applied is parallel to the direction of motion, then work done is:

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Maximum

Minimum

Zero

None of these

The half life of uranium-238 is

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6.2 x 10⁹years

4.5 x 10⁹days

4.5 x 10⁹years

1.3 x 10⁶years

One KWh is equal to:

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3.6 x 10²J

3.6 KJ

3,6 x 10¹KJ

3,6 MJ

Physical sciences deals with

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Living things

Nonliving things

Both living and non- living

Non of these

For a circular orbit, the satellite has speed of

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20,000 kmh^-1

25,000 kmh^-1

26,000 kmh^-1

27,000 kmh^-1

If the particle is moving in a circle of radius 'r' with uniform angular velocity ω. The angle between r and tangential velocity is

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0^o

90^o

180^o

270^o

When a strength changes the length of a body,it is called

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Tensile stress

Shear stress

Compressional stress

At every degree Celsius rise of temperature, the volume of a given mass of a gas at constant pressure increases by

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1/273 of its value at 0°C

1/373 of its value at 0°C

1/173 of its value of 0°C

1/700 of its value at 0°C

The magnitude of displacement is

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Distance between the two points

Distance in a curved path

Shortest distance between two points

None of these

The waves propagate in space by the motion of the

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wavelengths

frequencies

wavefronts

none of them

The state of rest and state of motion are

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Irrelevant

Relative

Both

None of these

Biomass is a potential source of renewable energy. This includes all the organic material such as

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Crop residue

Natural vegetation

Animal dung

All of these

A plane wavefront is that which has source

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Nearest

Distant

Near

None of these

A solid subjected to deformation along one dimension

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Only have tensile stress

Only have compressive stress

Have both tensile and compressive stress

None of them

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