Question # 1

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

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Maximum

Minimum

Zero

Very small

None of these

There are some whose resistivity becomes zero below a certain temperature, called

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absolute zero

0°C

critical temperature

lower fixed point

The number of vibrating body at any instant from its equilibrium position is called

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displacement

frequency

amplitude

time period

U-238 present in the natural uranium is about:

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59%

0.007%

99%

39%

19%

In solids, only following type/s of wave can travel:

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Transverse

Longitudinal

Both A and B

None of them

The results of spectra obtained by Balmer were expressed in 1896 by:

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Bohr

Rydberg

Planck

Rutherford

Coulomb

The wave nature of light was proposed by:

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Newton

Thomas Young

Huygen

None of these

If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:

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K/2

2 K

4 K

None of these

Radian is defined as the angle subtended at the center of a circle by an arc of:

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Length equal to its diameter

Length equal to its radius

Any length

None of these

The work performed on an object does not depend on:

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

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Energy, momentum and mass

Energy

Energy and mass

Energy and linear momentum

An inertial frame of reference is that frame of reference in which

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a = 0

a > 0

a < 0

all of them

Which of the following cannot have an effect on the weight of an object?

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The distance of the object from a planet

The acceleration of the object

The placement of the object on a different planet

The mass of the object

We can use Fibre optics system for

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Image transmitting

Word processing

Image processing and recelving

All

The unit of Planck's constant h is same as that of

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Energy

Work

Linear momentum

Angular momentum

The fine rulings on a compact disc as a diffraction grating but each line is wide like

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0.01 μm

0.5 μm

0.05 μm

0.6 μm

The dimensional formula of gravitational constant G is:

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MLT^-2

ML³T^-2

M^-1L³T^-2

M^-1LT^-2

The percentage uncertainty in measuring the volume of sphere measured by calipers callipers is when r = 2.25 ± 0.01 cm with least count ± 0.01 cm

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46.7 ± 0.5 cm²

47.7 ± 0.5 cm³

47.7 ± 0.6 cm³

477.6 ± 0.6 cm³

The cause of power loss in optic fibre is

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Absorption

Scattering

Dispersion

All

The value of the orbital radius measured for the centre of the Earth

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4.29 × 10⁵ km

4.23 × 10⁶ km

4.23 × 10⁴ km

4.23 × 10⁶ km

Which of the following are the units of intensity of light

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Pois

Lux

Siemen

candela

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 = 10 m/s²).

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58.8 m/s

49 m/s

65 m/s

19.6 m/s

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