Question # 1

Which particle has zero charge and zero rest mass.

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Neutron

Proton

Electron

Photon

A resistor connected to a battery is heated due to current passing through it. Which of the following quantity does not change.

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Resistivity

Resistance

Number of free electrons

Drift velocity

Two bullets a and b have masses 1 kg and 12 kg respectively.

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K.E. of B will be twice that of A

K.E. of A will be twice that of B

Both have same K.E.

K.E. of A will be half that of B

Hygen's principle states that

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Light travels in straight line

Light travels in electromagetic waves

All points of primary wave front are source of secondary wavelets

Light has dual nature

A particle performs SHM of amplitude 0.020 and frequency 2.5 Hz. What is its maximum speed.

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0.050 m s-1

0.125 m s-1

0.314 m s-1

0.75 m s-1

The specific heat of an ideal gas values as

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To

T1

T2

T3

Viscosity will be maximum when

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Water is at 20 ^oC

Honey is at 20 ^oC

Water is at 100 ^oC

Milk is at 100 ^oC

The terminal velocity in case of spherical droplet is directly proportional to.

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Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

The cross product of two vectors is magnitude when

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Vectors are parallel

Vectors are antiparallel

Vectors are perpendicular

They are rotated through 270^o

A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror What is the object distance.

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-5.0 cm

-7.5 cm

-15 cm

-20 cm

The electron behave an waves because

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They can be diffracted by a crystal

They can produce ions in gases

They can be deflected by magnetic field

They can be deflected by electric field

What is the emission of light by a substance that has observed light or others electromagnetic radiations of a difference wavelength.

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Fluorescence

Illuminance

Luminance

Incandescence

An immersion heater rated at 150 W is fitted into a large block of ice at 0 oC. The specific latent heat of fusionism 300 J g-1. How long does it take to melt 10 g of ice.

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5 s

10 s

15 s

20 s

Who discovered neutron in 1932.

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Chadwick

Bohr

Rutherford

Fermi

The moment of inertia of a body comes in action in

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Circular motion

Straight line motion

Curved path

zig zag motion

The gravitational strength on the surface of moon is 1.6 N kg-1 What will be the mass and weight of an object respectively on the surface of the moon.

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10 kg , 1.6 N

10 Kg , 16 N

16 Kg, 10 N

16 kg, 160 N

Which vector can be used to locate the centre of mass of a collection of particles.

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Null vector

Unit vector

Position vector

Distance vector

The horizontal range is equal for the angles.

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30 ^o and 45 ^o

30 ^oand 60 ^o

45 ^o and 90 ^o

60 ^oand 75 ^o

Linear magnification is equal to the ratio of.

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Size of the object to the size of the image

Size of the image to the size of the object

size of the object focal length

Size of the image focal length

A standard fixed point for calibrating a thermometer is.

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Boiling point of water

Melting point of ice

Temperature of steam

Triple point of water

Which of the following is the ideal gas equation.

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PV -n RT

P/V = n RT

V/P = nR/T

PV = T/nR

Wattles current is said to flow when phase angle between virtual current and virtual voltage is

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0^o

90 ^o

180 ^o

270^o

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

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2 mg

4 mg

8 mg

18 mg

Transistor stands for

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Transfer of resistance

Transfer of current

Transfer of power

Transfer of voltage

The energy delivered to the tissue per unit mass is called the absorbed dose of.

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X rays

gama rays

Radiation

energy

Which of the following quantity has a unit that can be expressed in terms of just two different SI base units.

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Area

Change

Electric current

Length

Which of the following is formed by decay of a free neurton.

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A number of electrons

Two protons

A proton and an electron

An alpha particle

When speed of a moving body becomes double.

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Its K.E. is doubled

Its acceleration is doubled

Its P.E. is doubled

Its momentum is double

The half life of a radioactive substance depend on.

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Pressure

Temperature

Amount of substance

No external influences

In which form energy is stored in acondenser.

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Electric energy

Potential energy

Kinetic energy

Magnetic energy

When a monochromatic wave enters from one medium into another the property that remains unchanged.

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Amplitude

Velocity

Frequency

Nature of the wave

In which one of the following states molecules do net leavt their position.

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Solid

Liquid

Gas

Plasma

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