Question # 1

When platinum wire is heated, then at the temperature of 500 ^oC, it becomes:

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Yellow

Orange red

Dull red

White

Cherry red

A resistance used in galvanometer to make it voltmeter is called

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shunt resistance

high resistance

zero resistance

none of these

The phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both (A) and (D)

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

Compton studied the scattering of x-rays by loosely bound electrons from:

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NaCl crystal

Graphite crystal

Zirconia

Copper crystal

None of these

The vast majority of solids are in the form of

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amorphous structure

polymeric structure

crystalline structure

all of them

Tick the one which is not polymer solid:

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Zirconia

Polythene

Nylon

Synthetic rubber

None of these

Which quantity has different dimension?

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Tension

Work

Energy

Torque

The instantaneous velocity of a body moving along a circle is directed

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along the radius

along the tangent

away from the circle

none of them

The energy acquired by a mass of 1g moving with the speed of light is

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3 x 10⁸J

9 x 10¹³J

3 x 10¹³J

9 x 10¹⁶J

Position was discovered by Carl Anderson in

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1920

1925

1928

1932

The engine of a car produces acceleration of 4 m/s²in the car.If this car pulls another car same mass,what will be the acceleration produces in m/s²

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2

8

4

12

The acceleration of the rocket is

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Who gave the idea of light as wave ?

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Newton

Huygen

Thomos Young

Bragg

A result of the Bernoulli's equation is that the pressure will be low where the speed of the fluid is

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Low

High

Very high

None of these

The main reason for the high speed of bullet train is

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Magnetic effect

Reduced friction

Design of train

None of these

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

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plastic limit

plastic deformation

proportional limit

elastic behaviour

In proportional limit (σ) of material, the stress increases with strain

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Linearly

Constant

Abruptly increases

None of these

The minimum number of unequal forces whose vector sum can be zero is

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3

2

1

4

A gravity free system, in which satellite moves due to

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The free fall acceleration

Radial accelerations

Gravitational acceleration

All of these

SI unit of temperature

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Centigrade

Celsius

Kelvin

All of these

The maximum range of the projectile is the horizontal distance covered is

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Maximum

Distance

Minimum

None of these

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