Question # 1

For multiplication and division purposes, percentage uncertainties are:

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Add

subtracted

Multiplied

Divided

Internal friction of fluid is called

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Surface tension

Viscosity

Resistance

Cohesive force

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

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0°

90°

70°

45°

In the force applied to parallel to the direction of motion, then the work done is:

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Positive

Negative

Zero

None of these

Graph of Black body radiation is example of

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Band spectra

Continuo's spectra

Line spectra

All

Nowadays, Most of the electric energy is produced by the A.C. generators using:

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Hydal water

Geothermal energy

Solar energy

Biomass

Both (B) and (D)

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

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Streamline, cannot

Turbulent, cannot

Streamline, can

None of these

Charge on proton is

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1.59 x 10^-9C

1.59 x 10^-7C

-1.59 x 10^-19C

1.59 x 10^-19C

For making cooking utensils, which of the following pairs of properties is most suited?

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Low specific heat and high conductivity

Low specific heat and low conductivity

High specific heat and high conductivity

High specific heat and low conductivity

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

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(i) and (ii)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms^-1then velocity at second cross-section is

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5000 cms^-1

500 cms^-1

50 cms^-1

0.5 cm/s

The length of the standard metre measured by Michelsion's interferometer comes out to be

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1,553, 163.5 wavelength

1553.5 wavelength

155316.5 wavelength

none of them

The value of solar constant in SI system is

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1340 watt/m²

1340 m²/watt

1340 watt/m

In projectile motion, the acceleration in horizontal is

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Maximum

Minimum

Zero

None of these

If the direction of the applied force is reversed then

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Its torque remain unchanged

The magnitude of its torque changes and direction of the torque remains the same

The magnitude of its torque remains the same but the direction of the torque reverses

Torque is also reversed

Which of the Following bulb will glow Brightest?

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100W

200W

300W

400W

Taking the earth to be a spherical conductor of diameter 12.8 x 10³ km its capacity will be:

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711 μF

611 μF

811 μF

511 μF

The magnification of a simple microscope of focal length 5cm is

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3

5

6

20

Light waves are:

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Transverse waves

Longitudinal waves

Compressional waves

None of them

Find the potential at a point, where a charge of 1 × 10^-3 coulomb is placed at a distance of 10 m is

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1 mV

1.9 KV

1.6 KV

.15 KV

Angle subtended at the centre of the circle by a body is called

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Angular velocity

Linear velocity

Angular displacement

All of these

The fluid which is incompressible and have streamline flow is called _________ fluid

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Ideal

Viscous

Non ideal

None of these

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