A. 4.4s
B. 3.4s
C. 2.4s
C. 2.0s
132. An astronomical telescope has an
objective of focal length 80 cm and gives 8 × angular magnification. The focal length of the eye
piece is.?
A. 6.0 cm
B. 8.0 cm
C. 10.0 cm
D. 12.0 cm
133. The points of units angular magnification
in a lens assembly are.?
A. Nodal Points
B. Principal
Points
C. Focal
Points
D. Contin
Points
134. In He0Ne laser the most favorable ratio
of Helium to Neon for satisfactory laser action is.?
A. 7:1
B. 1:4
C. 4:11
D. 1:7
135. The electric field at 20 cm from the
centre of a uniformly charged dielectric sphere of radius 10 cm is E. Then at a distance 5 cm
from the centre it will be.?
A. 16 E
B. 4 E
C. 2 E
D. Zero
136. Two pieces of wire of the same material have their lengths in the
ratio of 1:2 and diameters in the ratio of 2:1. If they are stretched by the
equal force, elongation will be int he ration of.?
A. 1:2
B. 1:8
C. 2:1
D. 8:1
137. The pressure at the bottom of a tank of liquid is not proportional
to.?
A. The density of the liquid
B. The height of the liquid
C. The acceleration
D. The area of the liquid surface
138. A body in equilibrium may not have.?
A. Acceleration
B. Momentum
C. Velocity
D. Kinetic
energy
139. If C is proportional to D, then.?
A. The product
CD is constant
B. The ration
C/D is constant
C. C is
smaller than D
D. C is larger then D
140. When a body undergoes an acceleration.?
A. Its
velocity increases
B. Its speed
increases
C. It falls
toward the earth
D. A force acts upon it
0 comments:
Post a Comment
Hello!
Although Every Comment is Appreciated. Feedback, Suggestions, Any Question Comment Below Be Carefully & Feel Free. Admin Will Give You Answer of Your Question in Just Within 12 Hours.