Question # 1

Direction of motion _________ in circular motion

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Changes off and on

Changes continously

Does not change

None of them

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

According to the Bernoulli's theorem the pressure velocity are

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equal to each other

proportional to each other

inversely proportional to each other

none of them

Second's pendulum is the pendulum whose time period is:

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1 second

2 second

3 second

None of these

The wave form of alternating voltage is the graph between:

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Voltage across X-axis and time across y-axis

Current and time

Voltage along y-axis and time along x-axis

Voltage and current

Either (B) or (D)

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

At constant volume temperature is increased. Then

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Collision on walls will be less

Number of collisions per unit time will increase

Collision will be in straight lines

Collision will not change

______ plays the same role during angular motion as played by the mass in linear motion

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Torque

Angular Momentum

Moment of a force

Moment of inertia

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

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Sensitive

Accurate

Stable

None of these

A capacitor acts as an infinite resistance for

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AC

DC

Both AC and DC

Neither AC nor DC

For multiplication and division purposes, percentage uncertainties are:

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Add

subtracted

Multiplied

Divided

The maximum drag force on a falling sphere is 9.8 N, its weight is

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1 N

9.8 N

4.9 N

None of these

An electric fan rotating in 3 revs^-1 is switched off. It come sot rest in 18.0 sec. Find the value of acceleration which is

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+ 1.267 revs^-2

0027 revs^-2

- 0.167 revs^-2

- 0.152 revs^-2

The rightward forces acting on a body in equilibrium are taken as

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negative

positive

either negative or positive

none of them

Travel time of light from sun to earth is

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8 hours 20 minutes

8 minutes 20 seconds

1 minutes 20 seconds

5 hour 20 seconds

Period of vibration of an atom in a solid is

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1 × 10^-10 sec

_{1 × 10}^-13_sec

1 × 10^-16 sec

1 × 10^-19 sec

If radius of droplet is halved then is terminal velocity in viscous medium

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Doubles

Is halved

Becomes one fourth

Becomes four time

Dielectric has the charge of the type inside it

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Moving charge

Static charge

Both a & b

None of these

Angular acceleration is produced in a body by the physical quantity called

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momentum

vibration

torque

centrifugal force

A pulsating DC can be converted into constant voltage by using

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Filter

Full wave rectifier

Half wave rectifie

Bridge rectifier

A compound microscopes consists of objective of

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Very short focal length

Large focal length

Very large focal length

None of these

In an inkjet printer, the toner drops are

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Charged

Not charged

Charged and deflected

None of these

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