Question # 1

Resultant vector can be found by:

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θ=tan^-1 Fy/ Fx

θ=tan[Fy/ Fx ]

θ=tan^-1[ Fy/ Fj ]

None of these

The quantities that are completely decribed by only magnitude are.

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vector

Scalar

Base

Derived

Significant figures in an expression are.

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All the digits

All accurately known digits

All the accurately known digits and the first doubtful digit.

All the accurately known digits and all the doubtful digits.

When a body is lifted through a height h, the work donw on it appears in the form of its.

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Kinetic energy

Potential energy

Elastic energy

Geothermal energy

According to Archimedes principle upthrust is equal to

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weight of displaced liquid

volume of displaced liquid

mass of displaced liquid

are of displaced liquid

Rooms are heated using gas heaters by

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Conduction only

Convection and radiation

Radiation only

Convection only

The Young's Modulus of Rubber is:

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1.40 ×106 N/m2

1.6× 106 N/m2

1.4 × 107 N/m2

0.40 × 108 N/m2

The formula of y component of force ' F ' is:

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F cos 𝜽

F Sin 𝜽

F tan 𝜽

Tan^-1 𝜽

The density of a substance can be found with the help of:

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Pascal's law

Hook's law

Archimedes principle

Principle of floatation

Ship and boats are designed on the principal of

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Charge

Densities

Volume

Floatation

Work is done when force displace inits own _____________

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Way

Method

Direction

None

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

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Newton

Joule

Watt

Coloumb

The amount of matter in a body is called:

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Velocity

Momentum

Mass

Force

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