161 Q) "Consider the following statements with reference to total internal reflection
I.Shinning of diamond.
II.Formation of mirage.
Which of the statements given above is/are correct?.
"
(a) Only I
(b) Only II
(c) Both I and II II
(d) Neither I nor
162 Q) "A radar beam is sent onto a moving aeroplane in opposite direction of its approach. In which of these way it will be affected?.
"
(a) Its wavelength decreases
(b) Its wavelength increases
(c) It remains unaffected
(d) None of the above
163 Q) If the spinning speed of the earth is increased then the weight of body at the equator
(a)increases
(b) decreases
(c) doubles
(d) does not change
164 Q) "Which one of the following is used to determine the age of human fossils?
"
(a)Density determination of fossil
(b)Softness of the fossil
(c)Radio-carbon dating
(d)Water content of the fossil
165 Q) "Now a day, most of buildings are made by having at least two layers of walls with a gap in between. Because
"
(a)it makes the building stronger
(b)it prevents see page from outside
(c)it protects the building from lightning
(d)it helps in keeping the inside cooler in summer and warmer in winter
166 Q) "Gases begin to conduct electricity at the low pressure because
"
(a)at low pressure gases turn into plasma
(b)colliding electrons can acquire higher KE due to increased mean free path leading to ionisation of atoms
(c)atoms break up into electrons and protons and electron started conducting electricity
(d)the electrons in the atom move freely in low pressure
167 Q) "Which of the following is true when the cells are connected in series?
"
(a)Current capacity increases
(b)Current capacity decreases
(c)The emf increases
(d)The emf decreases
168 Q) When the light is passed through a prism, the colour which deviates least is
(a)red
(b) green
(c) violet
(d) blue
169 Q) "SONAR is mostly used by
"
(a)doctor
(b) engineers
(c) astronauts
(d) navigators
170 Q) Match List I with List II and select the correct answer using the codes given below the list
List I
|
List II
|
(Discovery)
|
(Scientist)
|
A.
Radioactivity
|
1.
Roentegen
|
B.
Relativity
|
2.
Isaac Newton
|
C.
Gravitation
|
3.
Albert Einstein
|
D.
X-rays
|
4.
Henry Bacquerel
|
(a) 2 4 3 1
(b) 2 1 4 3
(c) 4 3 2 1
(d) 4 1 2 3
|
Attempt Next
Physics Quiz here
|
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