Question # 1

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

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Each have same number of molecules

Don't have same number of molecules

Can't be predicted

None

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10^-2Wb, and change in current is 0.01 A?

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2 H

3 H

1/2 H

Zero

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

Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?

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Gamma rays, micro waves, visible light

Radio waves, ultraviolet waves, X-rays

Ultraviolet rays, infrared rays, micro waves

Visible light, gamma rays, radio waves

Sound waves in air always

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Longitudinal

Transverse

Stationary

Electromagnetic

The sum of positive and negative peak values are usually written as

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P-P value

negative

zero

may be positive or negative

The magnetic field outside the solenoid due to current is

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strong

zero

weak

uniform

The critical temperature of tin is

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1.18 K

4.2 K

3.72 K

7.2 K

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

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125 J

90 J

160 J

85 J

In an ideal gas, the molecules have:

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Kinetic energy only

Potential energy only

Both KE and PE

None of these

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

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40 km/h

48 km/h

50 km/h

60 km/h

The slope of velocity-time graph gives

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Distance

Area

Acceleration

Speed

Capacitor is a device use to store the

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A.C. current

D.C. current

Charge

Voltage

Angular magnification of a simple microscope is given as

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The potential energy per unit charge is the unit of

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Flux

Electric intensity

Potential difference

None of these

For incident angles equal or greater than the critical angle the glass air boundary will act as a

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Convex mirror

Concave mirror

Mirror

None if them

Hard magnetic materials are

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Iron

Steel

Alnico

None of these

The blood pressure of man

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Increase with age

Decrease with age

Remains same

Cannot predicted

The horizontal component of a force at an angle 60° with it is 50N. The value of force is

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43.3 N

50 N

100 N

120 N

One Pascal in SI is equal to

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One newton metre

One newton metre^-1

One newton metre^-2

One dyne cm²

If the mass of the bullet is m fiber from a rifle of mass M with a velocity v. The recoiling of rifle is V', then the momentum of rifle is

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If the velocity-time graph is a straight line, then it is

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parallel to velocity-time

parallel to time axis

inclined to velocity axis

inclined to time-axis

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