Question # 1

The frequency of free vibrations is known as

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free frequency

forced frequency

natural frequency

un-natural frequency

One radian is

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Greater than one degree

Less than one degree

Equal to one degree

None of these

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

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10μF

20μF

30μF

15μF

The general theory of relativity treats problems involving

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inertial frame of references

accelerating frame of references

both of these

none of these

A P-N juction or semiconductor diode cannot be used as

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A rectifier

Detector

Oscillator

An amplifier

CRO deflects the beam of

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proton

a-particle

electron

neutron

The size of the image is maximum when its distance from the magnifying glass is:

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0.10 m

0.15 m

0.20 m

0.25 m

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

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8

4

6

7

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

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k/2

2 k

4 k

None of these

A body whose momentum is constant must have constant

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Acceleration

Velocity

Force

None of these

The body passing a viscous medium affected by:

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One force only

Two forces only

Four forces

None of these

The capacity of a parallel plat capacitor depends on the

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Type of metal used

Thickness of plates

Potential applied across the plates

Separation between the plates

Velocity time graph can also be used to determine

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Distance

Velocity

Acceleration

None of these

The uranium Nucleus 𝟐𝟑𝟖 𝑼 undergoes successive decays, emitting respectively 𝑎 − 𝒓𝒂𝒚,𝖰 − 𝒓𝒂𝒚 𝒂𝒏𝒅 − 𝒓𝒂𝒚𝒔. What is the atomic number and atomic mass of the resulting nucleus:

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90, 238

91, 234

92, 236

92, 238

The light which has components in all directions is called

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unpolarized light

polarized light

intense light

none of them

When a horse pulls a cart the force that helps the horse to move forward is the force exerted by

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The cart on the horse

The ground on the horse

The ground on the cart

The horse on the ground

Which row is correct for fission and for fusion?

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Produces larger nuclei

Produces smaller nuclei

The SI unit gravitational potential is

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Joule/Kg

Kg/joule

Joulex/Kg

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

A ball of mass m₁ and another ball of mass m₂ are dropped from equal heights.If time taken by the balls are t₁ and t₂ respectively then

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t₁ = t₂/2

t₁ = t₂

t₁ = 4t₂

t₁ = t₂/4

The moment of linear momentum of a body is called

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Angular momentum

Couple

Impulse

Torque

Flow rate has SI unit

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m²/s

m/s

m³/s

m³/s²

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