Question # 1

The instrument used to gather information form the far side of the universe is

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Compound microscope

Radio telescope

Astronomical Telescope

Simple microscope

Intensity of light determines the:

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Energy of each photon

Number of photons

Speed of photons

Size of photons

None of these

An angle of 180° in circular motion is equivalent to ______ in SHM.

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Half the vibration

One vibration

3/4th of a vibration

None of these

The collision in which KE is conserved but momentum is not conserved is called:

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Elastic collision

Inelastic collision

any these

None of these

In the equation E=mc²value of c is:

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1,86,000 miles per hour

1,86,000 miles per sec

3 X 10⁸m/sec

Both A and C

Both B and C

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

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9 x 10⁵V

9 V

8 x 10⁶V

80 V

Alternating current is produced by a voltage source which polarity:

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Remains the same

Reverse after period T

Keeps on reversing with time

Reverse after every time interval T/2

Both (C) and (D)

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 state in which ice, water and vapour coexists in equilibrium is called

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zero degree celsius

zero degree fahrenheit

absolute zero

373 K

A non-inertial frame of reference is one, in which

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law of inertial is valid

all laws of physics are the same in all frames

a>0 or a<0

a=0

In thermodynamics, internal energy is the function of

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temperature

pressure

state

none of them

Which equation is used to define resistance

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Energy = (current)²x resistance x time

Potential difference = current x resistance

Power = (current)² x resistance

Resistivity = resistance x area + length

An inertial frame of reference in which acceleration is

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Very high

Very very low

Zero

None of these

The physical quantity, which produces angular acceleration is called

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Centripetal force

Torque

Angular velocity

Moment of inertia

The ability of a body to return to its original shape when applied force is removed is called

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Stress

Strain

Elasticity

All of them

The age of universe is

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5 x 10¹⁷ sec

1.4 x 10¹⁷ sec

3.2 x 10⁷ sec

8.6 x 10⁴ sec

The maximum and minimum magnitudes of the resultant of two given vectors are 17 units and 7 units respectively.If these two vectors are at right angles to each other.the magnitude of their resultant is

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14

16

18

13

The speed of light in vacuum is 3 x 10⁸ ms^-1.Its speed in a medium of refractive index 1.5 will be

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6.5 x 10⁸

2 x 10⁸ ms^-1

4.5 x 10⁸ cm

5.5 x 10⁸

One poise = ___________.

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0.1 Nsm^-2

0.1 Pascal second

1.01 x 10⁵N

both A and B

Inverting amplifier circuits have

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A very high input impendance

A very low input impendance

A low output impendance

Both A and C

A single converging lens placed close to the eye to see magnified image is called

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A telescope

Compound microscope

Simple microscope

None of these

The term torque is synonymous with

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Moment of force

Moment of inertia

Angular momentum

Pressure

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