Question # 1

The maximum range of projectile is 100 km, Take 9=10 ms-2, the initial velocity of the projectile will be.

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1000 kms-1

1 kms-1

10 kms-1

100 kms-1

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

The magnifying power of an astronomical telescope is 10. If the focal length of objective is 100 cm, then what is the focal length of eye piece.

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10 cm

100 cm

1000 cm

5 cm

The wavelength of wave produced by microwave oven is.

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12 cm

12 m

18 m

18 cm

A fog droplets are in freely falling condition,. the ratio of their radii is 2:3, the ratio of their terminal velocities will be.

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2:3

4:6

4:9

9:4

The product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

the acceleration of a body having SHM, depends upon its.

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Time period

Amplitude

Frequency

Displacement from mean position

The resultant of two vectors having magnitude 12 N and 8 N can not be

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2 N

20 N

10 N

16 N

If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.

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Short size

Long focal length

Large size

Short focal length

The SI unit of work is

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Newton

Joule

Mol

Calorie

the work done in isochoric process is.

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Constant

Variable

Zero

Depend upon condition

The temperature scale which is independent of nature of substance is.

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Thermodynamic scale

Centigrade scale

Fahrenheit scale

Regnault scale

The experimental value for the velocity of sound in air is

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233 m-sec^-1

333 m-sec^-1

433 m-sec^-1

533 m-sec^-1

When two identical waves superimposed, which can change.

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Wave length

Frequency

Velocity

Amplitude

A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is.

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100%

70%

60%

50%

What would encourage trade between two countries

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Different tax system

Frontier checks

National currencies

reduced tariffs

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

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