| 1 |
The highest value reached by the voltage or current:
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A. In quarter cycle is called Instantaneous value
B. In half cycle is called peak-to-peak value
C. In one cycle is called peak value
D. In half cycle is called Instantaneous value
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| 2 |
A traveling wave has a shape of:
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A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
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| 3 |
The waveform of alternating voltage is a:
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A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
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| 4 |
The velocity of a projectile is maximum
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A. at the point of projection
B. just before striking the ground
C. at none of them
D. at both of them
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| 5 |
For the virtual image, option _______ is not correct:
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A. 1/p = 1/f -1/q
B. 1/f = 1/p -1/q
C. 1/p=1/p-1/f
D. 1/p=1/f+1/q
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| 6 |
The projectile attains maximum horizontal range when it is projected at an angle of
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A. 30°
B. 45°
C. 60°
D. 75°
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| 7 |
When platinum wire is heated, then at the temperature of 500 oC, it becomes:
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A. Yellow
B. Orange red
C. Dull red
D. White
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| 8 |
A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
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A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
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| 9 |
Radioactivity
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A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
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| 10 |
When a bicycle is in motion, the frictional forces exerted by the ground are
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A. In the forward direction on both the wheels
B. In the backward direction on both the wheels
C. In the forward direction on the front wheel and the backward direction on the rear wheel
D. In the backward direction on the front wheel and the forward direction on the rear wheel
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| 11 |
Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
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A. Maximum
B. Minimum
C. Zero
D. Very small
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| 12 |
If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
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A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
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| 13 |
An ambulance moves around a large round-about with its sirens on . For a person standing at the center of the round about, the frequency of ambulance siren heard will be.
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A. Equal to the actual siren frequency
B. Less than the actual siren frequency
C. Greater than the actual siren frequency
D. Changing as the ambulance moves frequency
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| 14 |
Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:
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| 15 |
Work done in lower and bucket into the well is:
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A. Zero
B. Positive
C. Negative
D. None of these
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| 16 |
Work is always done on a body when:
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A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
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| 17 |
The value of the plank's constant 'h' is given by
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A. 1.6 x 10-19J
B. 1.67 x 10-27Kg
C. 6.63 x 1034Js
D. 6.63 x 10-34Js
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| 18 |
Amorphous solids:
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A. Have definite melting points
B. Are called glassy solids
C. Have no definite melting point
D. Both (B) and (C)
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| 19 |
One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
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A. 2 kg
B. 3 kg
C. 4 kg
D. 8 kg
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| 20 |
Referring to above figure, current in coil P falls from its maximum value to zero
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A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
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| 21 |
When a wall is pushed by a person very strongly, he has done:
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A. Maximum work
B. Zero work
C. Positive work
D. Negative work
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| 22 |
Blood has a density
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A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
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| 23 |
When a stress changes the shape, it is called the
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A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
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| 24 |
The figure 1.007276μ shows the mass of an:
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A. Atom
B. Positron
C. Electron
D. Neutron
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| 25 |
Tick the conservation force:
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A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
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| 26 |
The speed of sound in a medium depends on
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A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
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| 27 |
The phase angle of a series RLC circuit at resonance is
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A. 180°
B. 90°
C. 0°
D. None of the these
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| 28 |
The number of vibration in two seconds can be expressed as ______ of frequency of vibration is f:
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A. f
B. 2 f
C. 3 f
D. 1/2 f
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| 29 |
Amplitude is the displacement of the vibrating body from:
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A. One extreme position to the other extreme position
B. Mean position any one extreme position
C. Both A and B are correct
D. None of these
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| 30 |
An Astronaut in space comes to know of an explosion on nearby planet. The astronaut came to know about this explosion becuase.
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A. The astronaut saw, heard and felt the explosion
B. The astronaut only saw the explosion
C. The astronaut only heard the explosion
D. The astronaut both saw and heard the explosion
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