| 1 |
Image formed by a camera is
|
A. Real, inverted, and diminished
B. Virtual, upright and diminished
C. Virtual, upright and magnified
D. Real, inverted and magnified
|
| 2 |
The image of an object 5 mm high is only 1 cm high. The magnification of the lens is
|
A. 0.2
B. 0.5
C. 1
D. 2
|
| 3 |
A man in an elevator descending with an acceleration will conclude that his weight has
|
A. Increased
B. Decreased
C. Constant value
D. Zero value
|
| 4 |
Which term best describes the nature of light from modern view point.
|
A. Waves
B. Rays
C. Particles
D. Photons
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| 5 |
Which equation in electromagnetism describe the magnetic field B generated by an electric current.
|
A. ampere's circuital law
B. Bio savart law
C. Gauss's law for electromagnetism
D. Coulomb's law
|
| 6 |
Sub atomic particles which experience strong nuclear force are.
|
A. Leptons
B. Hadrons
C. Mesons
D. Quarks
|
| 7 |
When a solid is melting the temperature remains constant even through heat is being supplied because the
|
A. Heat is being used to break up the intermolecular bonds
B. Solid is not absorbing any heat
C. Molecules are moving faster
D. Molecules are farther a part
|
| 8 |
An object moves 5.0 m north and then 3.0 m south . Find both the distance travelled and the magnitude of the displacement vector.
|
A. 2.0 m, 8.0 m
B. 8.0 m, 2.0 m
C. 8.0 m, 8.0 m
D. 2.0 m, 2.0 m
|
| 9 |
In an oscillating system damping means reduction in
|
A. Frequency
B. Wavelength
C. Amplitude
D. Period
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| 10 |
Since selenium becomes conductor in light so it is.
|
A. Photoconductor
B. Photocell
C. Thermistor
D. Photodiode
|
| 11 |
Difference between the molar heat capacity constant pressure and that a constant volume is equal to
|
A. Root mean square velocity
B. Mean free path
C. Boltzmann's constant
D. Universal gas constant
|
| 12 |
House hold circuits are mostly
|
A. Wired in sires
B. Wired in parallel
C. Made using wires of gold
D. Made using wires of silver
|
| 13 |
Plane polarized light can be produced by
|
A. Reflection
B. Refraction
C. Scattering of light
D. All of these
|
| 14 |
If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.
|
A. Larger
B. Smaller
C. Zero
D. Infinity
|
| 15 |
Any transparent medium bounded by one or two spherical surfaces is called
|
A. Prism
B. Lens
C. Plane mirror
D. Grating
|
| 16 |
Which of the following physical quantity has different units as compared to others.
|
A. Weight of a body
B. Tension of a string
C. Buoyant force
D. Electromotive force
|
| 17 |
Which of the following properties of light does not very with the nature of the medium.
|
A. Amplitude
B. Frequency
C. Wavelength
D. Time period
|
| 18 |
The circumference of earth was measured by
|
A. Alberuni
B. Alkundi
C. Ibn al haithem
D. Issac Newton
|
| 19 |
Static electricity occurs when
|
A. two metals are connected to a battery
B. Different insulators are rubbed together
C. The weather is very humid
D. Different conductors are rubbed together
|
| 20 |
The minimum amount of energy in an individual electron has to gain to escape from a particular surface is called.
|
A. Threshold frequency
B. work function
C. Wave number
D. Kinetic energy
|
| 21 |
The wave nature of light was proposed by
|
A. Thomas Young
B. Fresnel
C. Maxwell
D. Huygen
|
| 22 |
Alpha particles emitted from a radioactive material are.
|
A. He nucliei
B. H -nucliei
C. Li nucliei
D. B nucliei
|
| 23 |
Which of the following gases has the maximum rms speed at STP.
|
A. O2
B. H2
C. N2
D. CO2
|
| 24 |
The ripple tank is used to study various features of
|
A. Wave phenomenon
B. Interferences
C. Doppler's effect
D. Reverberation
|
| 25 |
The number of electrons in U nucleus are.
|
A. 92
B. 235
C. zero
D. 143
|
| 26 |
If a body a moving with constant acceleration the velocity time graph will be a
|
A. zig zag
B. Straight line
C. Constant value
D. zero value
|
| 27 |
A liquid surface tend to contract this phenomenon is due to
|
A. Viscosity
B. Diffusion
C. Density
D. surface tension
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| 28 |
Why FET amplifiers are called voltage controlled devices.
|
A. Input is a current signal
B. Output is a current signal
C. Input is a voltage signal
D. Output is a voltage signal
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| 29 |
Particle which can be added to the nucleus of an atom with changing its chemical properties are called.
|
A. Electrons
B. Protons
C. Neutrons
D. Alpha particles
|
| 30 |
A concave mirror is used to form an image of the sun on a white screen IF the lower half of the mirror were covered with an opaque card the effect on the image on the screen would be.
|
A. Negligible
B. To make the image less bright than before
C. To make the upper half of the image disappear
D. To make the lower half of the image disappear.
|