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Questions:-
Q1. For which Diode is used ?
(a)modulation
(b)oscillation
(c)amplification
(d)purification
Q2. Who among the following developed the technology of
underground nuclear explosion ?
(a)Dr. Horn J. Bhabha
(b)Dr. Vikram Sarabhai
(c)Dr. Raja Ramanna
(d)Dr. P. K. Iyengar
Q3. Which among the following types of coal produces most heat per unit?
(a) Coal
(b) Lignite
(c) Anthracite
(d) Pit
Q4. Which among the following waves is used for communication by artificial satellites ?
(a)Microwaves
(b)Radio waves
(c)A. M.
(d)Frequency of 101 series
Q5. What is found in frequency modulation?
(a)Fixed frequency
(b)Fixed dimension
(c)Change In frequency and dimension
(d)Change in dimension only
Q6. When the speed of car is doubled then what will be the braking force of the car to stop it in the same distance ?
(a) four times
(b) two times
(c) half
(d) one fourth
Q7. The dimension of which of the following is the same as that of impulse?
(a)Volume
(b)Momentum
(c)Torque
(d)Change in the rate of momentum
Q8. Which among the following is the fundamental quantity ?
(a) Volume
(b) Time
(c) Velocity
(d) Force
Q9. If the diameter of a capillary is doubled then the rise of water in it will be
(a) two times
(b)half
(c) four times
(d) no change
Q10. Why the needle of iron swims on Water surface when it is kept gently ?
(a)It will remain under the water when it will displace
more water than its weight
(b)the density of needle is less than that of water
(c)due to surface tension
(d)due to its shape
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