Sets
Physics Set 11
30 questions 1. The form of energy proposed to explain the accelerating expansion of the Universe is:
2. The Montreal Protocol reduced the use of:
3. Convex mirrors are used as rear-view mirrors in vehicles because they have a:
4. A child slides from rest down a frictionless slide of height 3.2 m (g = 10 m s⁻²). The velocity at the bottom is:
5. The results of Faraday's electrolysis experiments suggested the:
6. Two boxes of masses 2 kg and 3 kg, connected by a string, lie on a frictionless horizontal surface. A horizontal force of 20 N pulls the 2 kg box. The acceleration of the system is:
7. James Watt, after whom the SI unit of power is named, is known for inventing:
8. At the equilibrium position of an oscillating body, the net external force on it is:
9. The SI unit of electric potential difference is named after:
10. As the distance from a straight current-carrying wire increases, the magnetic field produced by a given current:
11. The new Moon day is also called:
12. The part of the human ear that converts vibrations into electrical signals for the brain is the:
13. The shearing stress of fluids is about ___ times smaller than that of solids.
14. Consider the following statements about X-rays:
(I) They are not deflected by electric and magnetic fields.
(II) They have very high penetrating power through matter.
(III) They are deflected by a magnetic field.
Which of the above is/are correct?
15. As the temperature of a blackbody increases, the wavelength at which the emitted energy is maximum:
16. A potential difference of 24 V across a resistor causes a current of 3 A. The resistance of the resistor is:
17. The motion of a simple pendulum is approximately simple harmonic when its angular displacement is:
18. J. J. Thomson was awarded the Nobel Prize in Physics in:
19. Which of the following media has the highest refractive index?
20. Oscillating bodies eventually come to rest at their equilibrium positions because of: