Across
- 2. The only elastic modulus that applies to fluids is ______________
- 6. Which type of waves show the property of polarisation?
- 10. If a lift is going up with acceleration, the apparent weight of a body is _______ than its true weight
- 13. The equivalent quantity of mass in electricity is ______________
- 14. The ratio of the K.E. required to be given to the satellite to escape earth's gravitational field to the K.E. required to be given so that the satellite moves in a circular orbit just above earth atmosphere is___________
- 15. Two concave mirrors have the same focal length but the aperture of one is larger than that of the other. Which mirror forms the sharper image?
Down
- 1. Orbital velocity of an artificial satellite does not depend upon _______ of the satellite.
- 3. A liquid does not wet the sides of a solid, if the angle of contact is ____________
- 4. A jet engine works on the principle of conservation of ____________
- 5. Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly increased and both the wires are made to vibrate simultaneously?
- 7. _______________ absorb only that part of light which produces dazzling effect in the eye.
- 8. How does the resolving power of a compound microscope change on decreasing the wavelength of light used?
- 9. What type of a lens is an air bubble inside water?
- 11. Surface area is a __________ quantity
- 12. A concave mirror is held in water. What should be the change in the focal length of the mirror?