Question # 1

The velocity v of a particle at time t is given by:

v = at + b / t + c

The dimensional formula of a,b and c care respectively:

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L² ; T and LT²

LT² ; LT and L

LT^-2; L and T

L;LT and T^-2

A body moving in circular motion with constant speed has

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Constant velocity

Constant acceleration

Constant kinetic energy

Constant displacement

Shunt required in an ammeter of resistance R to decrease its deflection from 30 ampere to 10 ampere is

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R/4

R/3

R/2

R

When boron is added as an impurity to silicon the resulting material is

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n type conductor

n type semiconductor

p-type conductor

p-type semiconductor

If two non-zero vector ̅A̅ and ̅B are parallel to each other, then ̅A̅, ̅B is equal to

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Zero

AB

A + B

A - B

At a certain instant a stationary transverse wave is found to have maximum kinetic energy the appearance of string of that instant is:

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

Which of the following is not thermo dynamical function?

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Enthalpy

Work done

Gibb's energy

Internal energy

A sun rise or sun set, the sun looks reddish because.

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The sun is coldest at these times

Of the effects of reflection and refraction

The sun is hottest at these times

Of the scattering of light

To make the frequency double of na oscillator we have to

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Double the mass

Half the mass

Quadruple the mass

Reduce the mass to one-fourth

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in he form of heat will be

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0.1 watt

1 watt

10 watt

100 watt

The distance between node and anti-node is

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λ

λ/2

λ/4

2λ

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