Question # 1

The consumption of energy by a 60 W bulb in 2 s is

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0.02 J

30 J

60 J

120 J

What would be the magnitude and direction of acceleration which would made the spring balance reading zero.

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Zero

1 m s-2 upward

9.8 m s-2 upward

9.8 m s-2 downward

Which particle is removed by a photon.

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Quark

Electron

Proton

Neutron

The angle of scattering for which the Compton shift is maximum is.

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0^o

45 ^o

80 o

180^o

The force that bonds protons and neutrons together int he nucleus despite the electrical repulsion of the protons is called.

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Molecular force

Nuclear force

Atomic force

Gravitational force

The magnus effect is equivalent to

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Bernouli's theorem

Archimedes principle

Pascal's law

Blood pressure

Palaroids can be used

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To control headlight glare in right driving

To determine the concentration of the optically active substances

In curtain less windows to adjust the amount of light

all of the above

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

The circuit of full wave rectification consists of

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Only one diode

Two diodes

Three diodes

Four diodes

When mas of a string is increased 4 times its original valve, the velocity of the wave.

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Becomes double

Reduces to one half

Reduces to one fourth

Increases 4 times to its original value

The dioptre power of concave lens of 10 cm focal length is.

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0.1 dioptre

1.0 diopter

10 dioptre

-10 dioptre

Which technique uses underwater sound propagation to detect and locate submerged objects.

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RADAR

LIDAR

SONAR

LASER

Unit vector of a vector A describes

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Magnitude of a given vector

Direction of given vector

Shape of a given vector

Magnitude and direction of a given vector

The practical efficiency of a heat engine is

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25% to 30.5 %

35% to 45%

30% to 45%

15% to 25%

A bat while flying determines the location and nature of object in his way by sending.

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Infrasonic waves

Ultrasonic waves

Supersonic waves

Ultraviolet waves

If the period of a wave motion is 2 s and the wave speed is 4 cm s-1 then its frequency is

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1/8 C s-1

1/2 C s-1

2 C s-1

8 C s-1

The equal and opposite forces acting on a body form

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Angular momentum

Linear momentum

Torque

Couple

The presence of a magnetic field can be detected by a

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Small mass

Stationary positive charge

Stationary negative charge

Magnetic compass

How much large is the proton mass than the electron mass.

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1536

1636

1736

1836

If a gas does 10 J of external work white expanding then the change in internal energy is equal to.

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0 J

10 J

-10 J

100 J

Which of the following is a non conservative force.

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Gravitational force

Air resistance

Elastic force

Tension in a string

The SI unit of solid angle is

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Degree

Radian

Steradian

Candala

The normal Human body temperature in Fahrenheit scale is.

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32 ^oF

40 ^oF

98.4^oF

212 ^oF

The SI unit of torque.

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kg m2

kg ms-2

kg m2 s-2

kg ms -1

X-rays are good for imagining

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Tendons

Brain

Bones

Heart

Which of the following describes that the time interval between two events may be different in different of references

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Simullaneously

Time dilation

Length contraction

Mass variation

When a transverse wave is reflected on going from a more dense to a less dense medium.

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There is no phase shift

There is a 180 ^o phase shift

There is a phase shift of 360 ^o

A crest is transformed to a trough

Change in which parameter determines the work done by a gas during adiabatic prcoess.

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volume

Pressure

Temperature

Weight

The half life of a given radioactive isotope is 10 years The original mass of the isotope is 12 g What mass of this isotope remains un decayed after 20 years.

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0.5 g

1.2 g

3.0 g

6.0 g

If a gymnast sitting on a rotating stool with his arms out stretched lowers his arms.

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The angular speed increases

The angular speed decreased

The angular speed becomes zero

The angular speed becomes constant

On which of the following parameters capacitance does not depend upon.

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Area of the plates

Medium between the plates

Distance between the plates

Nature of material for plates

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