Question # 1

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

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zero

negative

positive

non-existing

When there is no relative motion between the magnet and coil, the galvanometer indicates:

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No current in circuit

An increasing current

A decreasing current

Either B or C

Diameter of the nucleus s of the order of

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10^-10m

10^-12m

10^-15m

10^-18m

In series RC circuit when R=X_c, then the phase angle is

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0°

90°

70°

45°

Cosine of an angle is positive in:

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2nd quadrant

3rd quadrant

4th quadrant

All 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

The pattern of crystalline solid is:

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One dimesional

Two dimensional

Three dimensional

Either (A) or (B)

None of these

A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If centripetal acceleration is 9.8 m/sec², then its angular velocity is rad/sec is:

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22/7

7

14

21

The law of conservation of mass gives us the

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equation of continuity

Bernoulli's theorem

both of them

none of them

The quantity have dimension of ML²T⁰²will have SI unit of:

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Watt

Newton

Joule

Metre

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

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Are added

Are subtracted

Do not change

Are exchanged

When a movable mirror moves λ/4 distance and the light used is 400 nm, then the distance measured highly precise is

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100 nm

10^-4 nm

10^-6 nm

10^-5 mm

The minimum energy required by an electron to eject from metal surface is known as:

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Photo energy

Critical energy

Threshold energy

Work function

Graham Bell photo phone used a modulated beam of

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Reflected sun light

Refracted sun light

Diffracted sun light

None of these

Volume of metal cylinder with the help of a vernier callipers of least count 0.01 cm when diameter is 1.22 cm and length 5.35 cm. Find its uncertainty as

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6.02 ± 0.1 cm³

6.2 ± 0.1 cm³

6.25 ± 0.1 cm²

6.3 ± 0.1 cm³

A process which is carried at constant temperature and Boyle's law can be applied is called:

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Adiabatic process

Isothermal process

Isochoric process

None of these

Fraunhofer's lines commonly visible in the sun's spectrum are examples of

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Line emission spectrum

Line absorption spectrum

Band emission spectrum

Band absorption spectrum

A substance containing equal no. of opposite charges separated by a small distance is known as

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Super conductor

LED

Dipole

Insulator

Radian and Steradian are ________ units.

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Base

Derive

Supplementary

None of these

The velocity-time graph of a car is a straight line which rises the same height for equal intervals of time, if it moves with

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zero velocity

constant velocity

zero acceleration

constant acceleration

The coordinate axes are those in which lines are drawn

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Parallel

Perpendicular

At right angle

All of them

It is a common characteristic of all types of wave motion that

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Particles move up and down

Particles move back and forth

Energy is transferred without the transport of particles

A material medium transmits the disturbance

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