Question # 1

The unit of energy is same as that of

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Power

Work

Torque

Density

73.650 rounded off upto one decimal is

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73.6

74.00

73.7

73.65

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

Head to tail rule is used for

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Addition of vectors

Subtraction of vectors

Multiplication of vectors

Division of vectors

A ray of light shows the direction of propagation of light It is line which is.

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Normal to the wave front

Parallax to the wave front

Opposite to the wave front

Equal to the wave front

International Telecommunication satellite

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4,6,8 and 10 Hz

4,6,11 and 14 GHz

4,6,8 and 12 Hz

4,8,11 and 16 GHz

A direction of torque is

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Along the position vector r

Perpendicular to both r and f

Along the direction of force F

Opposite to the direction of r

When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is.

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5000 m

50000 A^o

500 cm

2000 A^o

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

The motion of a simple pendulum is the example of

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Vibratory motion

Rotatory motion

Periodic motion

Both a and c

For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively.

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10 cm

20 cm

5 cm

120 cm

The error in a certain measurement occurs due to

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Negligence of a person

In appropriate technique

Faulty Appraatus

All of rhe above

A diatomic gas molecules has

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Translational energy only

Rotational energy only

Vibrational energy only

All translational, Rotational and vibrational energy

The efficiency of any heat engine can never be

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+ve

100%

-ve

None of these

Which is nooptically active

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Sugar

Tartaric acid

Water

Sodium chloride

Unite of thermodynamics scale of temperature is.

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Centigrade

Fahrenheit

Kelvin

Celsius

Dot product of vector with itself is.

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Zero

2 A

A²

A

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