Question # 1

The unit of thermodynamical scale is

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centigrade

fahrenheit

kelvin

none of them

The horizontal component of a projectile moving with initial velocity of 500 ms^-1at an angle 60° to x-axis is

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500 ms^-1

1000 ms^-1

250 ms^-1

Zero

At low speeds, the drag force is

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proportional to speed

inversely proportional to speed

not simply proportional to speed

none of them

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

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ON switch

off switch

function switch

none of these

One mole of any substance contain

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same number of molecules

different number of molecules

may be same or different

none of them

A dimension stands for the ___________ nature of certain physical quantity.

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super

Quantitative

Qualitative

Both B and C

The restoring force is _____ and opposite to the applied force within ______,:

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Equal, elastic limit

Different, the walls of the laboratory

Different, elastic limit

None of these

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

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The charge in the plates reduces and potential difference increase

Potential difference between the plates increase, stored energy decreases and charge remains the same

Potential difference between the plates decreases and charge remains unchanged

None of the above

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

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F=IB/L

F= L x B/I

F = IL x B

F = IL . B

Compton shift refers to:

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Photon

Meson

Proton

Positron

Both (B) and (D)

The current produced by moving a loop of wire across a magnetic field is called:

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Direct current

Magnetic current

Alternating current

Induced current

None of these

When a shell explodes in mid-air, its fragments fly off in

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One direction

Opposite direction

Different direction

None of these

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

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convex lens

thin film

diffraction grating

interferometer

When a force is applied on a body, several effects are possible. Which of the following effect could not occur?

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the body rotates

the body speeds up

the mass of the body decreases

the body changes its direction

Dimensions of velocity are

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[L]

[T]

[LT^-1]

[LT^-2]

A diode as a rectifier converts:

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A)c into D)c

D)c into A)c

Varying D)c current into constant D)c current

High voltage into low voltage and vice-versa

If unit of length mass and time each be doubled the unit of work done is increased by

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4 times

6 times

8 times

2 times

Intensities of the two waves of light are I and 4I.The maximum intensity of the resultant wave after superposition is

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5I

9I

16I

25I

A compound microscopes consists of objective of

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Very short focal length

Large focal length

Very large focal length

None of these

According to Einsteins theory, gravity follows the inverse square law expect in

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Weak gravitational field

Strong gravitational field

Very very weak gravitational field

None of these

Which one of the following is an optically active substance?

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Quartz crystal

Calcite crystal

Sugar solution

All of these

For interference to occur the two light waves should be:

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Of two different frequencies

Coming from opposite directions

Of high intensity

Monochromatic

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