Question # 1

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

When an unbalanced external force acts on a body for a short interval of time.

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The body will experience an impulse.

The momentum of the body increases

The velocity of the body increase

The body is not effected

When an arrow is shot from a bow, it has K.E. which is given to it by

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The elongated tail

The stretched string of bow

The throw of archer

The sharp arrows head

An induced emf in a coil is independent of

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Time

Resistance

the number of turns in a coil

The charge in the magnetic flux

The circuit of full wave rectification consists of

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Only one diode

Two diodes

Three diodes

Four diodes

A negative magnification always means the the image is.

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Erect

Real

Virtual

Inverted

Which one of the following does not have the same dimenstions.

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Energy ,work, heat

Pressure, stress, Young's modulus

Voltage, electromotive force, potential difference

Electric flux, electric field, electric dipole moment

Two waves which combine to produce a resultant by reinforcing each other of every point demonstrate.

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Destructive interference

constructive interference

Refraction

polarization

The process in which a system undergoes a change of state at constant volume.

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Isobaric process

Isochoric process

Isothermal process

Adiabatic process

NOR gate is a combination of.

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OR gate and NOT gate

OR gate and AND gate

OR gate and OR gate

NOT gate and AND gate

An AND gate is.

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Equivalent to a series switching circuit.

Equivalent to a parallel switching circuit

Equivalent ot universal gate

A reciprocal of NAND gate

In heavy atims the electrons are assumed to be arranged in.

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Elliptical shells

Inner shells

Concentric shells

Outer shells

In which of the following studies x-rays are not helpful.

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Crystal structure

Crystal surface

Crystal symmetry

Crystal atoms

A plug connoted to a table lamp contains a 3 A fuse Why is the fuse needed.

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To increase the resistance of the circuit

To make it easier for the current to flow

To protect the wiring form overheating

To reduce the voltage across thelamp

When ever a system is made to complete a cyclic process the work done during the complete cycle.

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Is zero

Is negative

Is positive

Depends upon the path followed

A car is travelling on a level highway at at speed of 15 m s-1. A braking force of 3,000 N brings the car to stop in 10 s The mass of the car is.

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1500 kg

2,000 kg

2,500 kg

3,000 kg

Which current can pass through a capacitor continuously.

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Alternating current

Direct current

Eddy current

Pulsating current

The erecting lens of a telescope produces

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A shorter instrument

wider field of view

A larger image

A sharp image

Which of the following does not produced an erect image.

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Galilean telescope

Terrestrial telescope

Prism binoculars

Astronomical telescope

Which statement is true about the Magnetic poles.

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Unlike poles repel

Like poles attract

Magnetic poles do not effect each other

A single magnetic pole does not exist

A simple astronomical telescope consists of two

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Concave lenses

Convex mirrors

Convex lenses

Plano convex lenses

The process in which no heat enters or leaves the system is called.

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Isdobaric

Isochoric

Isothermal

Adiabatic

The magnetic flux linked with a circuit when a unit current flows through it is known as.

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Induced current

Induced emf

Coefficient of self induction of circuit

Eddy current

The magnitude of the instantaneous velocity is called the.

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_Displacement

Speed

Acceleration

Length

An example of simple harmonic motion is

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Fast moving cricket ball

Motion of bicycle

Motion of a bee

Motion of simple pendulum

The magnitude of resultant of three force is 3. If its x-component is 2, Y component is 1. Its 2-component will be.

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1

2

3

4

Why does a glass plate inside a colorless liquid become invisible

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The colours of both are same

The densities of both are same

Their refractive indices are same

Their refractive indices are different

If a vehicle is to gain momentum it must

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Lose weight

Move slowly

Lose inertia

Accelerate

The special theory of relativity was presented in 1905 by

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Young

Planck

Schrodinger

Einstein

Real gases obey gas laws only at

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Low pressure and high temperature

High pressure and low temperature

High pressure and high temperature

Low pressure and low temperature

Which quantity provides a quantitative measure of disorder.

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Entropy

Enthalpy

Randomness

Chaos

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