Question # 1

The closed loop gain of the non-inverting amplifier is given by

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G = R₂/R₁

G = -R₂/R₁

G = 1 - R₂/R₁

G = 1 + T₂/R₁

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

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0.1 m

0.2 m

0.98 m

Full length of the capillary tube

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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voltmeters

resistance

electrode

current

The number of LED'S needed to display all the digits is:

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Four

Five

Nine

Six

Seven

The distance from eye to near point is taken as:

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10 cm

15 cm

20 cm

25 cm

Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length

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X-rays

Ultraviolet rays

y-rays

Cosmic rays

When certain nucleus emits aβ-particles, is mass number:

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Remain same

Increases by one

Decreases by one

Decreases by four

None of these

The fractional change in resistance per kelvin is known as

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temperature coefficient

resistance coefficient

super temperature

critical temperature

Laplace formula is derived from

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Isothermal change

Adiabatic change

Isobaric change

None of these

Work-energy principle states that work done on the body by applied force is equal to change in:

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Potential energy

Kinetic nergy

Linear momentum

None of these

A car is turning around a corner at 10 m/sec as it travels along an arc of circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path:

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1 m

5 m

10 m

15 m

The dimensional formula of torque is:

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[ML²T^-2]

[MLT^-2]

[ML^-1T²]

[ML^-2T^-2]

A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 rad/s.The centripetal force is

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10 N

20 N

30 N

40 N

Polymers have chemically combinations with

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Carbon

Nitrogen

Hydrogen

All of them

The maximum wavelength of a transverse wave that can be set up in a string of length Lis

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L

2L

V

4L

You are traveling in a car during a thunder storm. In order to protect yourself from lightning you would prefer to

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Remain in car

Take shelter under tree

Get on and lie flat on the ground

Touch the nearest electric pole

A diode characteristics curve is a graph plotted between;

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Current and time

Voltage and time

Voltage and current

Forward voltage and reverse current

The object is placed at the principle focus of a simple microscope if the focal length of the lens is 2cm what is the magnifying power of the microscope

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13.5

12.5

Infinity

None of these

Chimney works best when it is

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Tall

Short

Of any shape

Insufficient statement

Which of the following quantities has not been expressed in proper units?

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Stress/Strain= Newton/metre²

Surface tension = Newton/metre

Energy = kg m/s

Pressure = newton/metre²

Surface tension of water is due to

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Inter molecular attractions

Intermolecular spaces

Inter molecular repulsion

None of above

If radius of droplet is halved then is terminal velocity in viscous medium

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Doubles

Is halved

Becomes one fourth

Becomes four time

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