Question # 1

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

By increasing the amount of stretch in spring the force exerted will

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Increase

One watt

One erg

One joule

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

Air blows from

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High pressure to low pressure

Low pressure to high pressure

Low temperature to high temperature

High temperature to low temperature

In the absence of external force, the change in momentum is.

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Zero

Constant

Decreasing

Increasing

Opted unit to measure blood pressure is.

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N/m2

Pascal

mm of Hg

N.m2

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When a fore of 100 N is acting on an object along x-axis then its vertical component will be.

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50 N

0 N

25 N

10 N

Stoke's law holds for bodies having.

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Spherical shape

Oblong shape

Rectangular shape

All shapes

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

If a body is moving in the counter clockwise direction the direction of angular velocity will be

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Toward the centre

Away from the centre

along the linear velocity

Perpendicular to both radius and linear velocity

Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes.

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Double

Half

Four times

Remains same

The product of cross sectional area of a pipe and speed of fluid along the pipe is

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Zero

Maximum

Constant

Variable

The dimensions of angular velocity are

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[LT-1]

[LT-2]

[T-1]

[L-1T-1]

Name the quantity which is a vector.

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Speed

Force

Temperature

Density

the systolic pressure of normal healthy person is.

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120 torr

130 torr

115 torr

110 torr

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

When the car moves with an increasing acceleration then its velocity time graph is always

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Constant

Variable

A straight line

A curve

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