Question # 1

At the top of the trajectory of a projectile the acceleration is

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The maximum

The minimum

Zero

g

The speed of a pendulum is measured to be 3.0 s in the inertial reference frame of the pendulum. What is its period measured by an observer moving at a speed of 0.95 c with respect to the pendulum

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2.9 s

3.0 s

6.6 s

9.6 s

Which of the following is an example of a S.H.M?

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motion of a projectile

motion of a train along a circular path

motion of swing

electrons revolving sound the nucleus

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

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0°

90°

70°

45°

The fractional change in resistance per kelvin is known as

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temperature coefficient

resistance coefficient

super temperature

critical temperature

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

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Becomes Half

Becomes double

Is not affected

Becomes one fourth

None of these

The L-C parallel circuit the capacitor draws a

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leading current

lagging current

main current

none of these

The special theory of relatively treats the problems involving:

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Inertial frames of reference

Non-inertial frames

Non-accelerated frame

Botha (A) and (C)

Both (B) and (C)

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh^-1. its acceleration will be

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7.71 m s^-2

0.5m s^-2

0.15m s^-2

0.092m s^-2

Significant figures in 0.2020 are:

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Two

Three

Four

Five

Where the streamlines are very close to each other, the pressure will be

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low

zero

high

all of them

Two bodies with masses M_A and M_b are moving with equal kinetic energy.Their linear momenta are numerically in a ratio

|P_A| : |P_b| will be:

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M_b : M_A

M_A : M_b

√M_A : √M_b

M²_A : M²_B

The bonding between the semi-conductor materials is

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covalent

ionic

either of them

none of them

Which is constant for a satellite in orbit?

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Velocity

K.E.

Angular Momentum

Potential Energy

When observed by transmitted light, the central band of newton's ring system consists of:

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Bright circular ring

Dark circular ring

May be bright or dark circular ring

No interference bands

The magnetism produced by electrons within an atom from motion/motions of electron.

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One motion

Two motions

Three motions

None of these

The distance between the two mirrors can be varied by

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Moving glass plate

Movable mirror

Compensator plate

None of these

The period of a satellite when there is critical velocity is

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80 min approx

84 min approx

82 min approx

90 mix approx

The mass of the object is a quantitative measure of

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Motion

Momentum

Inertia

None of these

Which of the given strains can also be written as tan θ

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Compressional strain

Volumetric strain

Shear strain

All of these

The unit of thermodynamics scale is

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C°

K

F°

All of these

In between two consecutive permissible energy band there is a range of energy states which cannot be occupied by electrons. These are called

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Energy band

Energy states

Forbidden energy gap

None of these

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