Question # 1

What is mass of body if W = 580 N ?

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5.8 Kg

0.58 kg

0.058 kg

58 kg

When 10 N along positive x-axis and 7 N along negative x-axis are added by head to tail rule. The resultant force is:

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17 N

10 N

7N

3 N

The value of 'g' on the surface of moon is:

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1.62 ms^-2

10 ms^-2

20 ms^-2

Zero

_______________ was a pupil of Galileo.

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Einstein

Robert

Al Razi

Torricelli

The number 275.00 consists of significant figures.

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4

3

2

5

Independent quantities are taken on

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- x - axis

x -axis

-y-axis

y-axis

The force exerted by earth on moon is :

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2.01× 1020 N

2.01× 1020 Kg

2.01× 1021 N

2.01× 1022 Kg m/s2

Perpendicular / Hypotenuse is called :

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Cos 𝜽

Sin 𝜽

Tan 𝜽

Tan^-1 𝜽

Anticlockwise torque is taken:

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Negative

Neutral

Positive

Nil

Thermal conductivities of Lead

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23

30

35

85

Central heating systems in buildings operate by

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Conduction

Radiation

Convection

Condensation

The waves in which particles of the medium vibrate perpendicular to the directions waves are:

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Electromagnetic waves

Sound waves

bothe a and b

Transverse waves

J.J Thomson observed deflection of cathode rays in:

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1895

1896

1897

1998

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

The equivalent resistance of a parallel combination is

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equal to sum of all resistance

is greater than the largest resistance of combination

is smaller than the smallest resistance of combination

All of these

Which is not an e.m.f source:

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Generator

Solar cell

Battery

Rheostat

The distance of image from mirror is represented by:

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q

p

F

m

Which device is used to store charge:

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Resister

Capacitor

Dielectric

Fuse

Which statement of the following is false for primary memory?

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The base of primary memory is electronics

This is a random access memory

It gets lost when computer switches off

It is built on laser technology

The time required to complete one round trip (vibration) abut mena position is called:

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Time period

Freqency

Amplitude

None of these

Which form of energy is sound?

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Electrical

Mechanical

Thermal

Chemical

The displacement produced in the spring directly proportional to force is called:

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Hook's law

Boyle's law

Newton's law

both 'b' and 'c'

The dimension of viscosity are

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[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

When the body moves with constant acceleration the velocity time graph is

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Parabola

Hyperbola

Straight line

Curve

By increasing the amount of stretch in spring the force exerted will

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Increase

One watt

One erg

One joule

Change of momentum is equal to

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Force

Tension

Impulse

Pressure

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

A force of 20 N acts along x axis, tis component is.

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0 N

10 N

20 N

30 N

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

When two identical travelling waves are superimposed, velocity of resultant wave.

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Decreases

Increases

Remain same

Becomes zero

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

The typical nuclei are less than:

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10^-16m

10^-14m

10^-12m

10^-10m

In A.C. generator , when plane of coil is perpendicular to magnetic field, then output of generator is.

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NwAB

2pi f

Maximum

Zero

The value of capacitive reactance is given by

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Xc = VI

All of above

Anti particle of electron is

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Proton

Photon

Neutron

Positron

A block body is an ideal:

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Absorber

Radiator

Both a & b

None of above

X -rays are similar in nature to.

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Gama rays

Beta rays

Alpha rays

Cathode rays

Out of the following which material is brittle.

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Wrought iron

Copper

Tungsten

High steel carbon

A capacitor stores energy in the form of.

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Magnetic field

Heat energy

Electrical energy

Mechanical energy

Circulation of blood is studied by radio isotope.

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Cobalt -60

Phosphorus -32

Sodium -24

Iodine -131

Curie temperature is a point where :

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Diamagnetism changes to paramagnetism

Paramagnetism changes to Diamagnetism

Ferromagnetism changes to paramagnetism

Paramagnetism changes to Ferromagnetism

When a pot difference of 4 volt is applied across resistance, 10 J of energy is converted Find charge flows

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0.20 C

2.5 C

5.0 C

10.0 C