Question # 1

Astrophysics is a branch of physics, which deals with

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Sub-atomic

Stars and galaxies

Light and sound

Music

An alpha particle has a charge of

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+2e

-2e

-e

+3e

The rain drop falling from the sky reach the ground with

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Constant terminal velocity

Constant gravitational acceleration

Variable acceleration

acceleration greater than g

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

The process of formation of spectrum is called:

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Interference

Spectroscopy

Dispersion

Reflection

Botha (A) and (D)

To convert galvanometer into ammeter we connect

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small resistance in parallel with galvanometer

small resistance in series with galvanometer

high resistance in series with galvanometer

high resistance in parallel with galvanometer

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

The reverse saturation current in a PN junction diode is only due to

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Majority carriers

Minority Carriers

Acceptor ions

Donor ions

The process in which energy is dissipated from the oscillating system is known as

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resonance

interference

diffraction

damping

The instantaneous acceleration of a body moving with constant speed in a circle:

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Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

0.10 cm can be written as:

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1.0 x 10^-2m

1.0 x 10^-3cm

1.0 x 10^-4cm

1. x 10^-4m

If a person with a spring balance and a body hanging from it goes up and up in an airplane then the reading of the weight of the body as indicated by the spring balance will

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Go on increasing

Go on decreasing

First increase and then decrease

Remains the same

The direction of a ray of light is.......to the wave front.

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Parallel

Equal

Opposite

Perpendicular

At terminal velocity the net force acting on it is

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Maximum

Minimum

Zero

None of these

pgh in Bernoulli's equation has unit of

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Volume

Force

Work/Volume

None of these

Steradian is an angle of

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One dimensional angle

Two dimensional angle

Three dimensional angle

None of these

Solar energy at normal incidence outsides the Earth atmosphere is about

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1.043 Wm^-2

1.2 Wm^-2

1.4 Wm^-2

1.67 Wm^-2

Inertial mass and gravitational mass are

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opposite

identical

identical when there is no friction

all of them

Upper fixed point of the thermometer is marked by using

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Barometer

Hydrometer

Hygrometer

Hypsometer

To observe the phenomenon of interference of light, the light should be

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Monochromatic

Phase coherence

Coherent sources

All of these

A car is moving high velocity when it takes a turn.A force acts on it outwardly because of

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Centripetal force

Centrifugal force

Gravitational force

All of these

The substances in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero, are called

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diamagnetic substances

ferromagnetic substances

paramagnetic substances

all of them

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