Q. The principal focus of a spherical mirror is located exactly between _____.
The correct answer was: Pole and center of curvature
Q. Devices with metallic bodies are generally connected to the ground wire. What is the reason for grounding these wires?
The correct answer was: To prevent excess electricity
Q. The SI unit of electric current is
The correct answer was: Ampere
Q. Two magnetic field lines
The correct answer was: Never intersect each other
Q. The crystalline lens becomes milky and cloudy in old age; this condition is called _____.
The correct answer was: Cataract
Q. What material is used for the filaments of electric bulbs?
The correct answer was: Tungsten
Q. An electromagnet is made of _____.
The correct answer was: Soft iron
Q. In an electric circuit, a device called _____ is often used to change the resistance in the circuit.
The correct answer was: Current controller
Q. A voltmeter is used in an electric circuit to measure _____.
The correct answer was: Potential difference
Q. The radius of curvature of a convex mirror used for the rearview mirror of an automobile is 3 m. If a bus is located 5 m away from this mirror, the image will be formed at a distance of _____.
The correct answer was: 1.4 m
Q. Name the type of lens used to correct myopia (nearsightedness).
The correct answer was: Concave lens
Q. The type of mirror used in vehicle headlights is
The correct answer was: Concave
Q. According to the Cartesian coordinate system, all distances are measured with respect to the principal focus from _____.
The correct answer was: Pole
Q. Which of the following is a good conductor of electricity?
The correct answer was: Iron
Q. The phenomenon of light diffraction can be observed in _____.
The correct answer was: All of the above
Q. The center of the reflective surface of a spherical mirror is a point called _____.
The correct answer was: Center of curvature
Q. The magnification produced by a plane mirror is +1. This means
The correct answer was: Object distance = Image distance
Q. The symbolic representation of a resistor with resistance R is
The correct answer was: +—R—+
Q. The breaking of light into its constituent colors is called _____.
The correct answer was: Dispersion of light
Q. The ability of the eye to focus on both near and distant objects while adjusting the focal length is called ________.
The correct answer was: Eye accommodation
Quiz Result
- Q1:
- Q2:
- Q3:
- Q4:
- Q5:
- Q6:
- Q7:
- Q8:
- Q9:
- Q10:
- Q11:
- Q12:
- Q13:
- Q14:
- Q15:
- Q16:
- Q17:
- Q18:
- Q19:
- Q20: