Question # 1

The projectile motion is composed of

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horizontal motion only

vertical motion only

horizontal and vertical motion

none of them

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm²will be

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1 cm

2 cm

8 cm

None

An emf is set up in a conductor when it:

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is kept in a magnetic field

is kept in a electric field

Move across a magnetic field

Both (A) and (B)

None of these

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

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546 K

273 K

546°C

273°C

A simple pendulum consists of a

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small light bob

small heavy bob

big light bob

big heavy bob

One coulomb of charge is created by

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10 electrons

1.6 x 10^-19electrons

6.25 x 10¹⁸electrons

6.25 x 10²¹electrons

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

Inertia mass and gravitational mass are

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opposite

identical

identical when there is no friction

all of them

The basic circuit elements of A.C circuit are

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Resistor

Inductor

Capacitor

All the three

The energy of a photon in a beam of infrared radiation of wavelength 1240 nm is

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100 ev

10⁶e v

10³e v

1.0 e v

The work done by a force, keeping an object in circular motion with constant speed is:

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Zero J

1 J

0.1 J

0.01 J

Area between the velocity time graph and time axis is equal to

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Speed of object

Distance covered

Velocity of the object

Acceleration

The Earth axis of rotation is

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Remains fixed

Remains fixed in one direction

Not fixed

None of these

SI Unit of power is

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Joule

Pound

Watt

Dyne

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Initial velocity

Variable velocity

Instantaneous velocity

None of these

The conductivities of conductors (metals) have

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10⁵ (Ω)^-1

10⁷ (Ωm)^-1

10⁸ (Ωm)^-1

10⁹ (Ωm)^-1

Magnetic field inside a solenoid is:

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) Directly proportional to current

Inversely proportional to current

Directly proportional to its length

Inversely proportional to total no of turns

The total linear momentum of an isolated system remains

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Constant

Variable

Zero

None of these

We can observe only when the grating spacing is

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of the order of the wavelength used

greater than the wavelength used

less than the wavelength used

any one of them

Each atom in a metal crystal:

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Remains fixed

Vibrates about a fixed point

Moves randomly

Rotates about the centre of the crystal

None of these

The wavelength of X-rays is about

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10^-14m

10^-10m

10^-6m

10^-4m

The components of a fibre optic communication system is/are

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At transmitter

An optical fibre

Receiver

All of these

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