Question # 1

The highest value reached by the voltage or current:

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In quarter cycle is called Instantaneous value

In half cycle is called peak-to-peak value

In one cycle is called peak value

In half cycle is called Instantaneous value

None of these

Nuclei that have the same charge number but different mass number are called

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isotones

isomers

isotopes

isobars

The value of the potential difference across the depletion region for the case of germanium is

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0.3 V

0.5 V

0.7 V

0.9 V

If a body reaches a speed equal to the speed of light, then its mass will became

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zero

very small

infinity

none of these

The absolute temperature of the tripple point of water is

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100°C

4°C

373 K

273.16 K

Conventionally the angular velocity is directed at an angle of

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Cosine of an angle is positive in:

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2nd quadrant

3rd quadrant

4th quadrant

All of these

A simple pendulum consists of a

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small light bob

small heavy bob

big light bob

big heavy bob

Amplitude in SHM is equivalent to ______ in circular motion:

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Diameter

Radius

Circumference

None of these

Unit vector is used to specify:

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Magnitude of a vector

Dimensions of a vector

Direction of a vector

Position of a vector

10⁶electrons are moving through a wire per second, the current developed is

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1.6 x 10^-19

1 A

1.6 x 10^-15A

10⁶A

The rate at which the battery is supplying the electrical energy is the:

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Power output

Electrical power

Power input

Both A and C

The vector product of two non zero vectors is zero when

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They are parallel to each other

They are perpendicular to each other

They are equal vectors

They are inclined at angle of 60°

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 force required to stop the vehicle in 10s is:

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120 x 10.8 N

180 N

720 N

360 N

When R_x and R_y are negative, the resultant lies in the third quadrant and its direction is

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θ = 180 + Φ

θ = 180 - Φ

θ = 90 + Φ

None of these

A body of mass m is falling downward in a viscous medium with terminal velocity v net force on the body is

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mg

mg-6πηrv

6πηrv-mg

Zero

A prism splits a beam of white light into seven component colors. This is so because

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Phase of different colors is different

Amplitude of different colors is different

Energy of different colors is different

Velocity of different colors is different

A body of mass 1.0 kg is falling with an acceleration of 10 m/s² Its apparent weight will be (g = 10 m/s²)

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1.0 kg wt

2.0 kg wt

0.5 kg wt

Zero

Solids have sharp melting points account of

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Long range order of atoms

Short range order of atoms

Equal strength of inter-atomic bonds

An isotropic nature

Truth of kinetic energy theory is confirmed by:

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Diffusion of gases

Brownian motion

Both A and B

None of these

Which phenomenon of light takes place in Young's double-slit experiment?

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polarization of light

diffraction of light

interference of light

reflection of light

If P is the pressure and V is the volume, Then PV will represent:

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Power

Work

Force

None of these

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