| 1 |
Which temperature is required for the fusion of two nuclides.
|
A. 106 K
B. 107 K
C. 10 8 K
D. 10 9 K
|
| 2 |
The ability of eye to focus near as well as distant object is termed as.
|
A. Myopia
B. Persistence of vision
C. Power of accommodation
D. Astigmatism
|
| 3 |
Alternating current generator consists of a coil and a pair of.
|
A. Split rings
B. Slip rings
C. Metal rings
D. Copper rings
|
| 4 |
What for is semiconductor diode used.
|
A. To convert D.C. to A.C.
B. To convert A.C. to D.C.
C. To increase voltage
D. To decrease voltage
|
| 5 |
As a positively charged rod is brought closer and closer to a positively charged electroscope the gold leaf.
|
A. diverges
B. Converges
C. is neutralized
D. Is unaffected
|
| 6 |
What is the refractive power of cornea in humans.
|
A. 13 dioptres
B. 23 diaoptres
C. 33 dioptres
D. 43 dioptres
|
| 7 |
In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.
|
A. Radioactivity
B. Radioactivity dating
C. Nuclear fusion
D. Nuclear fission
|
| 8 |
The part of theory of relativity which deals with accelerated bodies is called.
|
A. special theory of relativity
B. General theory of relativity
C. Lorentz's theory of relativity
D. Galilean theory of relativity
|
| 9 |
A D.C Motor converts
|
A. Mechanical energy into electrical energy
B. Mechanical energy into chemical energy
C. Electrical energy into mechanical energy
D. Electrical energy into chemical energy
|
| 10 |
The typical value of forbidden energy gap in germinium is.
|
A. 0.7 eV
B. 1.0 eV
C. 1.4 eV
D. 10 eV
|
| 11 |
The process in which no heat enters or leaves the system is called.
|
A. Isdobaric
B. Isochoric
C. Isothermal
D. Adiabatic
|
| 12 |
Which law states that if two systems are in thermal equilibrium with a third system they are also in the thermal equilibrium with each other.
|
A. Third law of thermodynamics
B. Second law of thermodynamics
C. First law of thermodynamics
D. Zeroth law of thermodynamics
|
| 13 |
The ratio of intensities of two sound waves is 4 : 9 what will be the ratio of their amplitudes.
|
A. 9:4
B. 2:3
C. 3:2
D. 4:9
|
| 14 |
A slow neutron can cause fission in
|
A. Uranium -238
B. Uranium-235
C. Hydrogen-1
D. Thorium -232
|
| 15 |
The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.
|
A. The photoelectric effect
B. The zeeman effect
C. The Compton effect
D. Quantum effect
|
| 16 |
The centre of mass of a system is a point where an applied force causes the system to move.
|
A. With rotation
B. Without rotation
C. Fastly
D. Slowly
|
| 17 |
The dispersive power of a grating is
|
A. Light used
B. Separation of lines
C. Frequency of light used
D. Independent of wavelength
|
| 18 |
What do we study by crystallography.
|
A. The analysis of X ray spectra of elements and study of crystal structure.
B. Visible spectra of sources and crystal study
C. Ultraviolet spectra of sources and crystal study
D. Characteristics of X-rays
|
| 19 |
When speed of a moving body becomes double.
|
A. Its K.E. is doubled
B. Its acceleration is doubled
C. Its P.E. is doubled
D. Its momentum is double
|
| 20 |
The average amount of energy transported by a wave per unit area per unit time is termed as
|
A. Wave speed
B. Wave intensity
C. Wavelength
D. Wave amplitude
|
| 21 |
For total internal reflection the light rays enter
|
A. From rarer to denser medium
B. From, denser to rarer medium
C. Medium of same refractive index
D. At an angle 90 o
|
| 22 |
The perpendicular distance between the line of action of forces and the axis of rotation
|
A. Torque
B. Moment arm
C. Moment of force
D. Momentum
|
| 23 |
We can hear beats when the difference in the frequencies of two sounding bodies is not more than.
|
A. 2
B. 4
C. 6
D. 10
|
| 24 |
The force on a point charge due to electromagnetic fields is called.
|
A. Lorenz force
B. Gauss's force
C. Newton's force
D. Ampere's force
|
| 25 |
A diatomic gas contains only
|
A. Translational K.E.
B. Rotational K.E.
C. Vibrational K.E.
D. All of these
|
| 26 |
What is the value of earth's magnetics fields.
|
A. 5 G
B. 50 G
C. 100 G
D. 500 G
|
| 27 |
Who developed the first atomic reactor.
|
A. Bohr
B. Fermi
C. Rutherford
D. Taylor
|
| 28 |
The average energy released per fission of U is about
|
A. 200 eV
B. 2 keV
C. 2 MeV
D. 200 MeV
|
| 29 |
Alpha particles are
|
A. Helium nuclei
B. sodium nuclei
C. Ioized nuclei
D. Hydrogen nuclei
|
| 30 |
Gases have
|
A. Fixed shape
B. Fixed volume
C. Fixed shape and volume
D. No fixed shape and volume
|