Question # 1

Referring to above figure, current in the coil P grows from zero to its maximum value

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At the instant the switch is closed

At the instant the switch is opened

When switch is kept open

All of above

Neither of above

Addition of 2.189 kg, 0.089 kg, 11.8 kg, and 5.32 kg gives the rounded off answer as:

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19.398

19.400

19.4

19.3

A mass of 5kg moves with an acceleration of 10m s^-2force applied is

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10N

50N

2N

20N

When the pn-junction is forward biased. the current flows through it is of the order of

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mili-amperes

amperes

nano-amperes

micro-amperes

The number if neutrons in the nucleus of ₉₂U²³⁵are

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Infinite

92

235

143

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s²

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0.064 m

640 cm

64 cm

64 m

Gaussian surface is always:

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Rectangular

Spherical

Cylinder

Box shape

Any of these

An eV is unit of:

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Potential

Energy

Work

Power

Both (B) and(C)

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

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minimum

maximum

zero

none of these

One radian is equal to:

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30.3°

45.3°

50.3°

57.3°

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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120 C

240 C

20 C

4 C

A 1500 kg car has its velocity reduced from 20 ms^-1 to 15 ms^-1 in 3.0 S. How large was the average retarding force

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- 4.5 KN

- 2.5 KN

- 3.7 KN

- 4.3 KN

Young's modulus for glass is

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15

35

39

55

An electron of charge e coulomb passes through a potential difference of V volts,its energy in 'joules' will be

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V/e

eV

e/V

V

Identify the vector quantity

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Heat

Angular momentum

Time

Work

The locus of all the points in the same phase of vibration is called:

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Wave packet

Wavefront

Wave number

None of these

The branch of physics which concerned with the ultimate particles of which the universe is composed is known as

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Solid state Physics

Particle Physics

Nuclear Physics

Atomic physics

Strain is defined in terms of:

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Formation

Deformation

Area

Newtons

None of these

A thermodynamic process in which temperature of system does not change during heating

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Isobaric process

Isobar process

Isothermal process

Adiabatic process

The photoelectric effect was explained by:

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Einstein

Davison

Hertz

Planck

Newton published laws of motion in his famous book "principia" in

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1867

1667

1676

1687

In terms of energy bands, semiconductors are those materials which at room temperature have conduction band

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Partially filled

Full filled

Slightly filled

None of these

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