Question # 1

The energy of a body during the motion is called:

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Potential energy

Kinetic energy

Elastic P.E.

Heat energy

Two forces of 2N and 4N are acting in opposite directions, Their resultant force will be

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2 N

4 N

6 N

8 N

In which of the following state molecules don not leave their position?

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Solid

Liquid

Gas

Plasma

Speedometer measures the.

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Acceleration

Velocity

Speed

All of these

By dividing displacement of a moving body with time, we obtain

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Deceleration

Acceleration

Speed

Velocity

The right angle triangle length of bas is 4 cm and its hypotenuse is 5 cm, then length of perpendicular is:

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1 cm

3 cm

9 cm

20 cm

In prefix form, 0.000001 would be expressed as.

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0.1 mm

0.01 mm

0.001 mm

0.0001 mm

Value of 'g' on surface of moon is:

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1.62 ms^-2

3.7 ms^-2

9.2 ms^-2

10 ms^-2

Magnetic force is an example of :

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Action at a distance

Force

Torque

Nil

1 hp is equal to :

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747 W

746 W

748 W

1000 W

Pressure is quantity:

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Scalar

Vector

Constnat

Dependent

The true ratio of a transformer is 10. It means:

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Vs = 10Vp

Ns = Np/10

Ns = 10NP

VS= Vp/10

If A input is 1 and B is zero, then in AND operation output will be:

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0

0.1

1

None of these

The intensity of lawn mover is:

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10^-1 wm^-2

10^-2wm^-2

10^-1wm^-3

10^-3wm^-2

The coulomb's law is valid for the charges which are:

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moving and point charges

moving and non-point charges

stationary and pont charges

stationary and large size charges

The minimum value of angle of deviation is called:

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Minimum angle

incident angle

angle of minimum deviation

None of these

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a and b

Sun light consist of ____________ colour

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6

7

5

2

in a dry cell, chemical energy changes into:

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mechanical energy

electrical energy

potential energy

kinetic energy

At mean position of pendulum, the potential energy of the pendulum is:

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Maximum

Minimum

Much more

Both a and c

The line which passes through pole of the mirror and center of curvature is called principal:

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Axis

Focus

Line

None of these

electric field is weak when:

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lines are far apart

lines are close together

no lines are present

lines are directed outside

In young's double slit experiment for the interference the central region will be

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Dark

Bright

Coloured

None of these

The efficiency of heat engine whose sink is at 17 ^oC and source at 200 ^oC is.

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38%

63%

80%

90%

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

The horizontal range of a projectile of 30^owith horizontal is same at an angle.

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40^o

45^o

90^o

60^o

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

A body has P.E. = mgh, when it is at height 'h' from the ground. At the point at the distance 'x' below from the top its P.E. with

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mgh

mgx

mg(x-h)

None of these

The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

A force of 10N makes an angle 30o with y axis. Then magnitude of x -component is.

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5 N

8.66 N

10 N

Zero

The force which is responsible for the breaking up of the radioactive element is.

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Weak nuclear force

Strong nuclear force

Electromagnetic force

Gravitational force

If speed of rotation of a generator is doubled the output voltage will be.

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Remain same

Double

Four time

One half

By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.

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20 ms-1

10 ms-1

2 cms-1

2 ms-1

A diode characteristics curve is a plot between

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Current and resistance

Voltage and time

Voltage and current

Current and time

Two opposite point charge of same magnitude separated by distance 2d, electric potential mid way between them is.

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1 V

2 V

Zero

V/2

The phase difference between current and voltage in an inductive circuit is.

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zero

90 ^o

180 ^o

45^o

The charge on Beta particle is

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+e

-e

-2e

None of these

The highest value reached by the voltage or current in one cycle is called.

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Peak ot peak value

Peak value

Instantaneous value

Root mean square value

In frequency modulation which factor changed.

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Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

Selenium is a

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Insulator

Photoconductor

Conductor

First insulator then conductor

When the back emf is zero, its draws.

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Zero current

Minimum current

Maximum current

Steady current