Q1. For which Diode is used?
Q2. Who among the following developed the technology of underground nuclear explosion?
(a) Dr. Homi 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?
Q4. Which among the following waves is used for communication by artificial satellites?
(a) Micro waves
(b) Radio waves
(c) A. M.
(d) F. M.
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
Q7. The dimension of which of the following is the same as that of impulse?
(d) Change in the rate of momentum
Q8. Which among the following is the fundamental quantity?
Q9. When a ring of metal is heated what happens to its hole?
(c) it expands or contracts according to its diameter
(d) it expands or contracts according to its coefficient of
Q10. If the diameter of a capillary is doubled, then the rise of water in it will be
(a) two times
(c) four times
(d) no change