Question # 1

Strictly speaking, the earth is:

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An accelerated frame of reference

A non-inertial frame of reference

An inertial frame of reference

^{A non-accelerated frame of reference}

Both (A) and (B)

The temperature of gas is produced by

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At potential energy of its molecules

The kinetic energy of its molecules

The attractive force between its molecules

The repulsive force between its molecules

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

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deuteron

deterium

protium

tritium

The pattern of crystalline solid is:

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One dimesional

Two dimensional

Three dimensional

Either (A) or (B)

None of these

At resonance frequency the impedance of parallel resonance circuit is

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Maximum

Minimum

Zero

None of the above

According to Rutherford atomic model, the positive charge in an atom

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is concentrated at its centre

is in the form of positive electron at same distance from its centre

is spread uniformly through its volume

none of these

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

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Q=V/C

Q=C/V

Q=1/2CV

Q=CV

A galvanometer is an instrument used to

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measure voltage across a circuit

detect current in a circuit

measure current flowing through a circuit

none of these

By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s²)

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58.8 m/s

49 m/s

65 m/s

19.6 m/s

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

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very high

very low

constant

zero

At resonance, the phase angle for RLC series resonance circuit equals

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0°

90°

180°

270°

When a vector is multiplied by a scalar, the product of the quantity will be

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A new vector quantity

New direction

Same direction

a and c

Just before setting the sun may appear to be elliptical This happens due to

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Diffraction

Reflection

Dispersion

Refraction

At terminal velocity the net force acting on it is

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Maximum

Minimum

Zero

None of these

An ideal heat engine can only be 100% efficient if its exhaust temperature is equal to

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0°C

0k

100°C

Temperature of source

If we go above the surface of earth equal to the radius of earth than value of g

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g

g/4

g/9

g/2

A tourmaline crystal is being used as an analyzer In one complete rotation of the crystal the number of excitation will be

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0

1

2

4

A hole is made in the bottom of a container having water field up to a height h, the velocity of water flowing out of the hole is depend on

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Independent of h

Proportional of h^1/2

Proportional to h

Proportional to h²

When a bullet is fired by a gun, the gun move backward with a

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velocity less than that of the bullet

velocity equal to that of the bullet

velocity greater to that of the bullet

remains at rest

A man is an elevator descending with acceleration will conclude his weight has

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Increase

Decrease

Remain constant

Become zero

A steel bar can bear a load of 20 tons. If the thickness of bar is double, then for the same depression it can bear a load of:

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40 ton

80 ton

160 ton

5 ton

Mathematically the vertical velocity component is

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