Q1. Who defined the law of gravitation ?
(a) Newton
(b) Archimedes
(c) Galileo
(d) Faraday
Q2. The metal used to make lightning conductors is
(a) Iron
(b) Aluminium
(c) Copper
(d) Zinc
Q3. A hydrogen balloon floats up because of
(a) air pressure decreases with decrease in height
(b) air pressure decreases with decrease in weight
(c) weight of the balloon is less than the weight of air displaced by it.
(d) the pressure inside the balloon is more than the pressure outside it
Q4. In a rechargeable cell what kind of energy is stored within the cell?
(a) Electrical energy
(b) Potential energy
(c) Chemical energy
(d) Kinetic energy
Q5. Which one of the following lenses should be used to correct the defect of astigmatism ?
(a) Cylindrical lens
(b) Concave lens
(c) Convex lens
(d) Bifocal lens
Q6. Superconductors are those elements
(a) Whose conductivity is intermediate between metals and insulators
(b) Whose resistance falls almost to zero at very low temperatures
(c) which turn into insulators at very low temperatures
(d) which conduct electricity only at super-high temperatures
Q7. In Laser (say neon laser) all the atoms emit the light waves of
(a) Same frequency
(b) Same amplitude
(c) Same phase
(d) All of the above
Q8. Which of the following has got more heat capacity ?
(a) Iron piece
(b) Water
(c) Gold piece
(d) Benzene
Q9. If the temperature of a place increases suddenly, the relative humidity
(a) Increases
(b) Decreases
(c) Remains constant
(d) Fluctuates
Q10. Fleming’s right hand rule is used to find the direction of the
(a) Alternate current
(b) Direct current
(c) Induced current
(d) Actual current
Solutions
S1. Ans.(a)
S2. Ans.(c)
S3. Ans.(c)
S4. Ans.(c)
S5. Ans.(a)
S6. Ans.(b)
S7. Ans.(d)
S8. Ans.(b)
S9. Ans.(b)
S10. Ans.(c)
