Question # 1

In thermodynamics, internal energy is the function of

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temperature

pressure

state

none of them

The waves produced in a microwave oven have wavelength.

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12 mm

12 cm

12 m

12 mm

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

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incompressible

compressible

viscous

non viscous

Second's pendulum is the pendulum whose time period is:

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1 second

2 second

3 second

None of these

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

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Sensitive

Accurate

Stable

None of these

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

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Both hit the ground at the same veloctiy

Both hit the ground at the same speed

The change of velocity during the path for both balls is the same

The change of speed during the path for both balls is the same

The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is

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100 J

1.6 x 10^-17J

100 eV

1.6 x 10^-17eV

A dimension stands for the ___________ nature of certain physical quantity.

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super

Quantitative

Qualitative

Both B and C

Crystalline solids are in the form of:

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Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

Most practical application of electricity involve

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Charges at the rest

Charges in the motion

Electrons at rest

Atoms in motion

Molecules in motion

Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in

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1916

1919

1921

1923

If V denotes volume of the liquid coming out of a pipe per second, v is velocity and A as area of the pipe, then the correct formula will be:

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V = v x A

v = V x A

A = v x V

None of these

An object is placed at a distance of 200 cm from a convex lens of focal length 10 cm the linear magnification is

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1/3

2/3

3/4

None

The decrease in velocity per unit time is called

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deceleration

acceleration

uniform acceleration

variable acceleration

To produce same acceleration in the bodies of masses 10 kg and 20 kg the force applied in the second body should be

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Halved

Equal for both bodies

Doubled

Three times

Shear modulus for copper is

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20

27

44

43

As 1 ohm x 1 farad = 1 second For MΩ x PF =

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Second

ms

μ s

Ms

In torque when the force is kept constant and the moment arm increases, then the torque

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Increases

Decreases

Remains constant

None of these

Electric field lines emerge the charges in

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One dimension

Two dimensions

Three dimensions

None of these

The curie temperature of iron is

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600 C^o

650 C^o

700 C^o

750 C^o

Types of physical quantities are

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one

Two

Three

None of these

Torque producing clockwise rotation is taken as

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negative

positive

zero

both negative and positive

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