| 1 |
The lines of a difference grating have a spacing of 1.2 m. When a beam of monochromatic light is incident normally on the grating. The first order maximum monochromatic light is.
|
A. 1200 nano meters
B. 450 meters
C. 600 nano meters
D. 700 nano meters
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| 2 |
A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be
|
A. 60°
B. 90°
C. 30°
D. 0°
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| 3 |
Ethanol (alcohol) as a type of:
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A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these
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| 4 |
When velocity of moving body is doubled, the quantity which is also doubled is its:
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A. K.E.
B. Acceleration
C. Momentum
D. P.E.
|
| 5 |
The value of the metastable state for Neon is
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A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
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| 6 |
Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.
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A. Disc, sphere
B. sphere, hoop
C. Thin rod, hoop
D. Hoop,disc
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| 7 |
Electromagnetic radiation or photons interact with matter in
|
A. two distinct ways
B. three distinct ways
C. four distinct ways
D. five distinct ways
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| 8 |
Energy stored in the spring of a watch is called
|
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
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| 9 |
OP-AMP has the following input terminals
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A. one
B. two
C. three
D. four
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| 10 |
At high speed, fluid friction _____ and fuel consumption ___,:
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A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
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| 11 |
The value of relative permittivity of different dielectrics are:
|
|
| 12 |
If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be
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A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
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| 13 |
In the above figures, tell which set is graphs shows that a body is moving uniform velocity:
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A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (ii) and (iv)
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| 14 |
The concept of direction is purely:
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A. Absolute
B. Relative
C. Relative to stars always
D. Relative to the sun always
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| 15 |
In a soft iron, domains are
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A. easily oriented along external field and do not return to original random positions
B. easily oriented along external field and readily returns to originally random position
C. do no oriented along external field and also do not returns to originally random position
D. none of them
|
| 16 |
A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
|
A. 64 W
B. 80 W
C. 100 W
D. 125 W
|
| 17 |
The figure 1.007276μ shows the mass of an:
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A. Atom
B. Positron
C. Electron
D. Neutron
|
| 18 |
The flow of an ideal fluid is
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A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
|
| 19 |
If the waves produced in a microwave oven are of wave-length 12 cm, then their frequency will be:
|
A. 2500 MHz
B. 0.25 MHz
C. 2500 KHz
D. None of these
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| 20 |
When the same object is viewed at a shorter distance, the image on the retina of the eye is _____ the so the object appears:
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A. Greater, smaller
B. Smaller, smaller
C. Smaller, larger
D. Greater, larger
|
| 21 |
A swing has
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A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
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| 22 |
If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
|
A. increases
B. decreases
C. becomes zero
D. is conserved
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| 23 |
In AND gate, the output is 1 if:
|
A. Both inputs are 0
B. Both inputs are 1
C. Only one input is 0
D. Both (A) and (B)
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| 24 |
Spectrum represents the number of component colours present in certain light in terms of:
|
A. Wavelength
B. Frequency
C. Energy
D. Both (A) and (B)
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| 25 |
Which one is conservative force
|
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
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| 26 |
At the top of the trajectory of a projectile the acceleration is
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A. The maximum
B. The minimum
C. Zero
D. g
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| 27 |
A process is a reversible process, if the entropy of the system
|
A. increases
B. decreases
C. remains constant
D. none of them
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| 28 |
Under the elastic region, the deformation produced in the material, the deformation produced in the material will be
|
A. permanent
B. temporary
C. either of them
D. none of them
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| 29 |
Two forces each of 10 N act on a body, if the force are inclined at 30° and 60° respectively with x-axis, then x-component of their resultant is:
|
A. 20 N
B. 13.66 N
C. 10 N
D. 8.66 N
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| 30 |
The path (or trajectory) described by a projectile is
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A. a parabola
B. a hyperbola
C. a circle
D. a straight line
|