A bullet is fired at a certain angle with the horizontal. Its path will be
elliptical
a straight line
a parabola
a vertical line
Correct Answer :
C. a parabola
Related Questions
When an electric bulb breaks, there is an explosive sound. That is due to
the chemical reaction between the gases inside the bulb
the compressed gases inside rushing out suddenly
the air outside rushing in to fill the vacuum inside the bulb
None of the above
In a freezer ice cubes will be formed more quickly in trays made of
rubber
plastic
aluminium
wood
The speed of light is minimum while passing through
air
glass
vacuum
water
Of the following which has got the highest frequency?
ultraviolet rays
gamma rays
radio waves
infrared waves
The image of an object formed on the retina of the eye is
virtual and upright
virtual and inverted
real and inverted
real and upright
Which of the following rays has the highest penetrative power?
�± -rays
�² -rays
�³ -rays
X-rays
A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will
increase
decrease
remain the same
first decrease and then increase
The force that keeps a body in a circular motion la called
the centripetal force
the centrifugal force
the frictional force
All the above
The earth's nearest neighbour in space is
the Sun
the Moon
the Venus
the Mars
A photon is
a quantum of electromagnetic radiation
light source used in photography
a photo film
sun-light
The image formed by a plane mirror is
of the same size as the object
at the same distance behind the mirror as the object is in front of it
virtual and laterally inverted
All the above
One can be recognised by his voice alone due to the factor of
quality
amplitude
pitch
loudness
In experiments on static electricity the standard method for obtaining small amounts of positive electricity is to rub
a glass rod with flannel
an abonite rod with flannel
a glass rod with silk
Any of the above
In the ramous equation of Einstein E = mc2 , 'c' denotes.
velocity of sound
velocity of light
a constant factor
wavelength of light
The world's first artificial satellite Sputnik I was launched by Russia in
1985
1957
1959
1960
The motion .of the pendulum of a wall clock is an example of
linear motion
vibratory motion
rotational motion
None of the above
An electric charge is measured in
coulomb
ampere
volt
watt
X-rays were discovered by
Wilhelm Roentgen
WO Coolidge
Henry Cavendish
William Watson
The world's first artificial satellite Sputnik I was launched by Russia in
1985
1957
1959
1960
An astronomical unit of distance is
a kilometre
light year
the average distance from the earth to the sun
None of the above
A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be
a parabola
a horizontal straight line
a vertical straight line
a circle
Alpha particles are
electromagnetic radiations
helium nuclei
negatively charged particles
neutral particles
The extremely luminous objects located at the centre of some distant galaxies and which are sources of high energy electromagnetic radiation are known as
Nebulae
Quasars
Meteors
Comets
The stem of a vibrating tuning fork is pressed against a sound box. Then
the loudness of the sound increases
the loudness remains the same
the loudness decreases
the sound suddenly stops
A simple mercury barometer is found in a slightly slanting position. The atmospheric pressure
is found by measuring the slanting height of the mercury column
is given by the vertical height
cannot be measured with it
u) can be measured by both the methods described above
A rod of brass is held in hand and rubbed with fur. The rod is found to have
no charge
positive charge
negative charge
can't be said
A cyclist leans inwards when he is negotiating a curve 10 that
he may increase his speed
his weight may be reduced
necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion
no frictional force may be produced between the wheels and the axle
Which metal is used in storage batteries?
Copper
Lead
Tin
Iron
If an object is placed between two parallel plane mirrors, the number of images formed will be
1
infinite
0
4
Two tumblers stuck together can be separated by
pouring ice cold water into the inner tumbler
pouring ice cold water on the outer tumbler
pouring hot water into the inner tumbler
dipping both the tumblers in hot water