| 1 |
From which radiation it is most difficult to protect oneslelf.
|
A. Alpha radiation
B. Beta radiation
C. Gama radiation
D. Heat radiation
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| 2 |
The nib of fountain pan is split of convey ink down the nib by the phenomenon of.
|
A. Adhesion
B. Cohesion
C. Osmosis
D. Capillary
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| 3 |
Bernoulli's equation is Applica table to points
|
A. In a steady flowing liquid
B. In a streamline
C. In a straight line perpendicular to steamline
D. In any non viscous liquid
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| 4 |
In the concept of magnetic circuit, the quantity analogous to resistance in Ohm's law is.
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A. Reactance
B. Dipole
C. Impedence
D. Reluctance
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| 5 |
The impedance of the circuit at resonance frequency is
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A. Minimum
B. Maximum
C. Zero
D. Infinity
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| 6 |
In a cloud chamber the Alpha particles leave
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A. Dense, straight and continuous tracks
B. Only straight and continuous tracks
C. Thin and discontinuous tracks
D. Irregular tracks
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| 7 |
The ablate of rays of different colours to converge a single point sifter refraction though a convex lens is called.
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A. Come
B. Distortion
C. Spherical aberration
D. Chromatic aberration
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| 8 |
The fundamental quantities which form the base of the SI are.
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A. mass, energy and time
B. mass, force and time
C. mass, length and time
D. mass , length and time
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| 9 |
It the force acting on a body is doubled its acceleration becomes.
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A. Half
B. Constant
C. Double
D. One fourth
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| 10 |
interference and diffraction of light support the
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A. Wave nature of light
B. Transverse nature of light waves
C. Quantum nature of light
D. Electromagnetic nature of light
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| 11 |
The current passing through the coil of a galvanometer is directly proportional to
|
A. Resistance
B. voltage
C. Angle of deflection
D. conductance
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| 12 |
Which Russian Physicist first proposed the liquid drop model for the nucleus in 1928
|
A. Niels Bohr
B. George Gamow
C. Niel Armstrong
D. Bill Clinton
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| 13 |
The band width of an audio amplifier is.
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A. 10 Hz to 10 kHz
B. 20 Hz to 54 Hz
C. 20 Hz to 20 kHz
D. 20 Hz to 60 kHz
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| 14 |
In a diffraction pattern, the width of any fringe
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A. Is directly proportional to slit width
B. Is inversely proportional to slit with
C. Has no dependence on slit width
D. Is zero
|
| 15 |
How eddy current losses are reduced in A F and R F transformers.
|
A. By using air cores
B. By using shell cores
C. By using laminated cores
D. By using ferrite cores
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| 16 |
When impurities are added to metals they
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A. Will decrease the elasticity
B. Will increases the elasticity
C. Will not change the elasticity
D. Will or will not change the elasticity
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| 17 |
Which of the following is the ideal gas equation.
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A. PV -n RT
B. P/V = n RT
C. V/P = nR/T
D. PV = T/nR
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| 18 |
In case of a convex lens the rays closed to and parallel to the principal axis will converge after refraction by the lens at a point.
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A. Optical centre
B. Principal focus
C. Focal plane
D. Principal axis
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| 19 |
Light rays after passing through is concave lens.
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A. Bend away from principal axis
B. Bend towards principal axis
C. Remain undeviated
D. Travel parallel to the principal axis
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| 20 |
An uncharged di electric body experience a force when placed in an electric field if.
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A. A field in non zero at the body
B. The electric is a polar material
C. The dielectric is a non polar material
D. The field is non uniform over the body
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| 21 |
If there are no frictional effects, the mechanical energy of a system executing simple harmonic motion.
|
A. Changes with time
B. Is variable
C. Is constant
D. Is not conserved
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| 22 |
For a prism of particular and given wavelength the resolving power varies as
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A. First power of lens of its base
B. Square of inverse length of its base
C. Increases of length of its base
D. Cube of the length of its base
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| 23 |
Stationary waves are produced when two identical waves are moving on the string.
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A. Along the same direction
B. Along the opposite direction
C. Along the perpendicular direction
D. Of length 1 m
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| 24 |
If the dot product of two non zero vectors vanishes the vectors will be.
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A. any scalar quantity
B. Any negative number
C. Its magnitude but not direction
D. Its magnitude and direction
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| 25 |
If the earth stopped rotating the weight of objects at either pole would.
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A. Be grater
B. Be less
C. Vary with altitude
D. Be the same before
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| 26 |
If an elevator is moving vertically up with an acceleration 'a' the force exerted on the floor by a passing of mass 'm' is
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A. Ma
B. Mg
C. M(g +a)
D. M (g-a)
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| 27 |
a 2,000 kg heavy truck travelling at 36 km h-1 strikes a tree and comes to a stope in 0.1 s The average force on the truck during the crash is.
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A. 2 x 102 N
B. 2 X 103 N
C. 2 X 104 N
D. 2 X 103 N
|
| 28 |
A substance which has empty conduction band.
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A. Insulator
B. Conductor
C. Semi conductor
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| 29 |
The object of a telescope is very large this is to have an image which is.
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A. More magnified
B. Of better resolution
C. More bright
D. More clear
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| 30 |
The permittivity of a medium.
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A. Is a measure of the density
B. Is equal to unity for air
C. Depends on the charge derisory of the medium
D. Determines the magnitude of an electric field that can be established by the medium
|