Question # 1

The blood pressure of a person

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decrease with age

increase with age

has no effect with age

none of them

When a wall is pushed by a person very strongly, he has done:

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Maximum work

Zero work

Positive work

Negative work

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm²will be

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1 cm

2 cm

8 cm

None

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

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F_D-mg

Zero

mg-F_D

None of these

The study of fluid in motion basically involves law of conservation of:

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Mass

Energy

Change

Both A and C

Both A and B

The waveform of alternating voltage is a:

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Square

Rectangular

Saw-tooth

Sinusoidal

None of these

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

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400 m/sec

40 m/sec

430 m/sec

300 m/sec

A rocket carries its own fuel in the form of

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liquid only

liquid or solid

liquid and solid

liquid or solid and oxygen

The potential difference across each resistance in series combination is

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same

different

zero

none of these

A digital system deals with quantities or variables which have

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only one state

only two discrete states

three discrete states

four discrete states

The special theory of relativity treats problems invoving

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inertial frame of references

accelerating frame of references

both of these

none of these

The wave nature of light was proposed by:

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Newton

Thomas Young

Huygen

None of these

Which of the following types of optical fibre has a very thin core of about 5μm diameter and has a relatively large cladding?

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single mode step index fibre

multi-mode step index fibre

multi-mode graded index fibre

none of them

The re conversion of light signals into electrical signals takes place due to

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Transmitter

Receiver

Generator

None of these

SI unit for moment arm is

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Nm^-2

Nm

Kg ms²

None of them

On a rainy day if there is an oil drop on tar road colored rings are seen around this drop This is because of

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Interference pattern produced due to thin oil film

Diffraction pattern

Polarization

Total internal reflection of light

In an interference pattern of Ypung's double Slit (YDS) experiment:

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Bright fringes are wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

Which pair of quantities are not derived quantities?

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Charge, Current

Current, Intensity of Light

solid angle, plane angle

None of these

Which one is least multiple?

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exa

femto

atto

nano

Wave front is the locus or all points in vibration are in the same

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Frequency

Phase

Wavelength

All of these

In petrol engine, the first stroke is the

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Power stroke

In take stroke

Exhaust stroke

None of these

The two vectors to be combined have magnitude 60 N and 35 N. Pick the correct answer from those given below and tell why is it the only one of the three that is correct.

(i) 100 N

(ii) 70 N

(iii) 20 N

Choose an answer

(i) is correct

(ii) 20 N

(iii) is correct

(ii) may be correct

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