Question # 1

Moon is nearly _________ km away from earth.

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6 x 10²⁴

380000

199.62 km

30000

The mass of a body is 1 kg, its mass in deep space is :

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1 Kg

0.5 Kg

0.25 kg

0

Weight is measured by:

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Spring balnce

Measuring cylinder

Physical balnce

None of these

At sea level , Atmosphere pressure is:

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101,300 Pa

101,400 Pa

101,500 Pa

101, 600 Pa

A minor but sudden fall in atmospheric pressure is followed by

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a storm and a rain

an intense weather

a pleasant weather

a poor weather

Least count of digital vernier callipers is.

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0.01 cm

0.01 mm

0.1 mm

0.1 cm

A black dull surface is a good ________ of heat:

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Emitter

Absorber

Reflector

Both A and B

The value of gravitational acceleration when a body is moving in downward direction is.

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10 ms^-1

10 ms^-2

10 m

-10 ms

Process by which liquids changes into vapors is ............... .

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Vaporization

Evaporation

Boiling

None of above

The number of perpendicular components of a force are

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1

2

3

4

The unit of coefficient of friction .

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Newton

ms^-1

ms^-2

No unit

The value or current I passing through a conductor is inversely proportional to:

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Temperature

Potential difference

e.m.f.

resistance

A capacitor stores 0.24 coulombs at 10 volts. It capacitance is:

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0.024F

0.12F

0.6F

0.8F

The number of wavelength of waves passing through a point in one secnd is called:

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Time period

Cycle

Frequency

None of these

Program up gradation refers to:

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Program enhancement

Program identification

Program development

Program implementation

In C.R.O grid is always connected with potential:

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Negative

Positive

High positive

Zero positive

What is the power rating of a lamp connector to a 12 V source when it carries 2.5 A:

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4.8W

14.5W

30W

60W

The angle at which prism deviates the incident ray is called:

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Angle of incident

Angle of reflection

Angle of deviation

Angle of minimum deviation

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2 Ω

4 Ω

8 Ω

12 Ω

Specific resistance of silver is:

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1.7x10^-8 Ω.m

2.63x10^-8 Ω.m

2.75x10^-8 Ω.m

7.0x10^-8 Ω.m

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate:

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The rod and the paper are oppositely charged

The rod acquires a positive charge

The rod and the paper have the same charges

The rod acquires a negative charge

The ampere is a unit of:

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Energy

Potential differrence

Electric potential

Electric current

The formula for the power is

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P= W/d

P=W/v

P=W/t

P=Wt

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

The fluid is said to be incompressible, if its density is.

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Zero

Very high

Constant

Very small

Cloud formation in atmosphere is an example of.

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Isothermal process

Isochoric process

Adiabatic process

Isobaric process

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

Angular displacement is

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Scalar quantity

Vector quantity

Basic quantity

None of these

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

A finite volume of gas consists of

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Small no. of molecules

Large no. of molecule

Average no. of molecule

None of these

If a body of mass 5 kg is raised vertically through a distance of 1 m, then work done is.

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49 J

4.9 J

490 J

0.49 J

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

Laser is a beam of light which is

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Monochromatic

Coherent

Unidirectional

All of these

Photo diode is used for detection of.

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Heat

Magnet

Current

Light

The first theory about the structure of an atom was introduced by

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Neil Bohr

Einstein

Compton

Rutherford

The energy of the photon of wavelength 500 nm is.

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3.10 eV

2.49 eV

1.77 eV

1.52 eV

μ_∘(Ampere's constant) has value.

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4πx10^-7 WbA^-1m^-1

4πx10^-17 Wbm²

4πx10⁷ WbA^-1m^-1

4πx10-27 Wb/m²

An alternating quantity (voltage or current) is completely known if we know its:

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Maximum

Frequency and phase

Effective value

Both (a) & (b)

Which one of the following paved the way for modern physics

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Newtonian mechanics

Theory of relativity

Quantum theory

All of above

Unit of Stephen's constant is

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W m K^-2

W m^-2 K^-4

W m K^-4

None

The force which is responsible for the breaking up of the radioactive element is.

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Weak nuclear force

Strong nuclear force

Electromagnetic force

Gravitational force

We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:

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Uncertainity Priciple

De-broglie Theory

Einstin Theory

Photo electric effect

Compton effect proves.

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Wave nature of radiation

Wave nature of particle

Dual nature of particle

Particle nature of radiations