Question # 1

1 micro =

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10^-3

10^-6

10^-2

10^-12

Complete equation fy/fx =

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Sin𝜽

Cos 𝜽

Tan𝜽

Cos ec𝜽

The radius R of the earth is:

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6 x 10¹⁸m

6.4 x 10⁶m

6.4 x 10⁸m

6.4 x 10¹²m

The potential energy of a body of mass 'm' placed at a height 'h' above the surface of earth is equal to

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P.E. = mg

P.E. = mgh

P.E. = 3mgh

P.E. = 2mgh

If the acceleration is 10 m/s2 and mass 10kg:

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F = 99N

F = 100 Kg

F = 100 m/s2

F =100 N

In summers the railways bends due to:

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Expansion

Contraction

Both

None

Which of following units is equal to Kgm² s^-2

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Newton

Joule

Watt

Coloumb

The unit of torque is:

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Nm^-2

Ncm

Nm^-1

Nm

________ is used to measure the force or weight of a body :

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Physical balance

Spring balance

A and B both

None

S.I unit of specific heat is:

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Jkg^-1 K^-1

J^-1kg^-1K^-1

JkgK

Jkg^-1K

Metals are good conductors of heat due to :

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Free electrons

Big size of molecules

Small size of molecules

None of these

Crocus flower open when the temperature is:

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23 ^oC

26^oC

29^oC

32^oC

The bad conductor of heat is:

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Iron

Copper

Air

Aluminum

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