Page-22
Physical SCience
296)The activities of Indian Remote Sensing satellite are
A. Mineral exploration
B. Communication
C. Trafic studies
D. Locatiing groundwater
E. Assessment of crop productivity
A, B, C and D
A, B, C and E
A, D and E
A, B and C
Answer :
297)What is the importance of discovery of Higgs boson?
It will enable us to understand why elementary particles have mass
It will enable us to transfer matter from one place to another without traversing the space between them
It will enable us to create better fuel in future
All of these
Answer :
298)Which type of pen use capillary action and gravity for flow of ink?
Fountain pen
Ball pen
Gel pen
Both ball pen and gel pen
Answer :
299)The dimension MLT2 is for
Velocity
Accleration
Work done
Force
Answer :
300)In order to avoid the buckling of a beam, one has to
A. Use material with high Young's modulus
B. Use material with low Young's modulus
C. Construct the beam with large load bearing surface and enough depth
D. Construct the beam with small load bearing surface and enough depth
A only
B only
C and D
A and C
Answer :
301)Which one of the following is correctly arranged in descending order of energy
X-ray, IR ray, UV ray, Gamma ray
Gamma ray, X-ray, UV ray, IR ray
Gamma ray, UV ray, X-ray, IR ray
X-ray, Gamma ray, UV ray, IR ray
Answer :
302)In respect to magnetic properties, oxygen is a
Magnetic material
Paramagnetic material
Ferromagnetic material
Diamagnetic material
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303)Maximum sound tolerace of human being is
70db to 85db
50db to 70db
60db to 85db
65db to 85db
Answer :
304)The similarity between electromagnetic force and gravitational force is that - in both the cases, the force is
between charged objects
between massive and neutral objects
a short range
a long range
Answer :
305)In incandescent electric bulb -
The electrical energy is converted into magnetic energy
The electric energy is completely converted into light energy
The electric energy is partly converted into light energy and partly converted into heat energy
None of these
Answer :
306)Which of the following range of frequencies is used by Message Signal in general?
Audio frequency
Radio frequency
Both (a) and (b)
None of these
Answer :
307)Light Emitting Diode (LED) converts -
thermal energy into light energy
mechanical energy into light energy
light energy into electric energy
electrical energy into light energy
Answer :
308)Fibre optics works on the principle of
difuse reflection of light
regular reflection of light
totoal internal reflection of light
refraction of light
Answer :
309)The founder of quantum theory of radiation is -
S N Bose
Bohr
Einstein
Plank
Answer :
310)Which of the following is proved by Rutherford's experiment?
The presence of electron in atom
The presence of neutron in atom
THe presence of atom in matter
The presence of nucleus in atom
Answer :
