Question # 1

A body moving with an acceleration of 5 m/sec²started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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150 m

250 m

350 m

400 m

In magnet-coil experiment, emf can be produced by:

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Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving the coil

Relative motion of the loop and magnet

Any one of above

All above

In series RC circuit when R=X_c, then the phase angle is

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0°

90°

70°

45°

The velocity of sound at same temperature is maximum in

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H₂

N₂

O₂

NH₃

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

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4/5Ω

5/4Ω

20Ω

0.05 Ω

The mass of fluid passing through any cross-section per unit time is called

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electric flux

magnetic flux

mass flux

none of them

Circular motion is an example of motion in:

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One dimension

Two dimensions

Three dimensions

None of these

The rear wheels of an automobile are rotating with an angular velocity of 14 rev/sec which is reduced to 38 rad/sec in 5 second when brakes are applied. Its angular acceleration is:

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5 rad/sec²

-10 rev/sec²

-10 rad/sec²

-5 rev/sec²

Structure of the nucleus was explained by

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J.J Thomson

Bohr

Millikan

Rutherford

The value of the metastable state for Neon is

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20.66eV

20.61eV

19.23eV

18.70eV

The value of the input resistance of OP-AMP is of the order of

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few ohms

few hundred ohms

several kilo ohms

several maga ohms

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

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F =q(v/B)

F=q²(v x B)

F=q(v x B)

F= vx B

Electric intensity at a place due to a charged conductor is a

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Scalar quantity

Vector quantity

Semi vector and semi scalar

Dimensionless quantity

Both A and D are true

Computer chips are made from:

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Iron

Silicon

Helium

Stontium

Aluminium

Specific heat at constant pressure is greater than the specific heat at constant volume because

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Heat is used up to increase temperature at constant pressure

Heat is used by gas for expansions purposes at constant pressure

Heat is use dup to increase internal energy

The above statement is invalid

Generally a temperature scale is established by

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one fixed point

two fixed point

three fixed point

four fixed point

If the length of a simple pendulum is 0.25 m its time period would be

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1.0 s

2.0 s

3.0 s

4.0 s

If an amount of heat enters the system it could

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decrease the internal energy

not change the internal energy

increase the internal energy

none of them

A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:

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38 m/sec

3.8 m/sec

0.6 m/sec

None of these

Another mean of electric potential energy per unit charge is given by:

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Electric intensity

Potential gradient

Electric Flux

Potential difference

None of these

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

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Zero

5μC m^-2

20μC m^-2

8μC m^-2

The neighbours of every molecule in crystalline solids are arranged in

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an irregular manner

a regular manner

any manner

none of them

Arsenic, antimony and phosphorus are the elements from

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third group

fourth group

fifth group

none of them

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

When two spherical conducting balls at different potentials are joined by a metallic wire, after some time:

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Both the conductors are at the same potential

Potential difference across the conductors remain constant

Potential difference across the conductors becomes zero

Both (A) and (B)

Both (A) and (C)

With the help of 50 K v electron microscope, a resolution of

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0.5 to 1 m to possible

1 m to 10 m is possible

0.5 to 1 nm is possible

1 to 10 nm is possible

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

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Zero

10⁵m

10^-10N

10⁸N

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

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120 x 10.8 N

180 N

720 N

360 N

In an ideal gas, the molecules have:

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Kinetic energy only

Potential energy only

Both KE and PE

None of these

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

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Mechanical waves

Electromagnetic waves

Matter waves

All of them

A convex lens acts as diverging lens when the object is placed:

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Between F and 2F

At 2F

With focal length

Beyond 2F

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