1. When performing the experiment on the relationship between the
current and voltage for a resistor, which of the following is most
important to maintain?
A. The temperature of the resistor
B. The length of the resistor
C. The ambient temperature
D. The power supply voltage
Answer: A) The temperature of the resistor
Rationale: The resistance of a material depends on its temperature. For
accurate measurements, the temperature should remain constant to
ensure a linear relationship between voltage and current.
2. In a practical experiment involving the refraction of light through a
glass slab, the angle of incidence is measured at the surface. What is the
expected behavior of the light ray?
A. It will bend towards the normal when entering the glass.
B. It will bend away from the normal when entering the glass.
C. It will not bend at all.
D. The ray will refract in a circle.
Answer: A) It will bend towards the normal when entering the glass.
,Rationale: When light enters a denser medium like glass from air, it
bends towards the normal due to the difference in refractive indices.
3. In a simple harmonic motion experiment, which factor is most
directly related to the time period of the oscillating body?
A. Amplitude
B. Mass of the body
C. Length of the pendulum
D. Gravitational acceleration
Answer: C) Length of the pendulum
Rationale: The time period of a simple pendulum depends on its length
and gravitational acceleration. The mass and amplitude do not affect
the time period.
4. In an experiment to determine the focal length of a convex lens using
the image formed by a distant object, what must be carefully measured?
A. The distance from the lens to the object
B. The distance from the lens to the image
C. The angle of incidence
D. The angle of refraction
Answer: B) The distance from the lens to the image
, Rationale: The focal length of a convex lens is determined by
measuring the distance from the lens to the image when the object is at
a sufficiently large distance.
5. When measuring the voltage across a resistor in a circuit, which
device should be connected in parallel?
A. Ammeter
B. Voltmeter
C. Galvanometer
D. Thermistor
Answer: B) Voltmeter
Rationale: A voltmeter is designed to measure the potential difference
across components and should be connected in parallel to the resistor.
6. Which equipment is used to measure the specific heat capacity of a
substance in the laboratory?
A. Calorimeter
B. Thermometer
C. Voltmeter
D. Barometer
Answer: A) Calorimeter
current and voltage for a resistor, which of the following is most
important to maintain?
A. The temperature of the resistor
B. The length of the resistor
C. The ambient temperature
D. The power supply voltage
Answer: A) The temperature of the resistor
Rationale: The resistance of a material depends on its temperature. For
accurate measurements, the temperature should remain constant to
ensure a linear relationship between voltage and current.
2. In a practical experiment involving the refraction of light through a
glass slab, the angle of incidence is measured at the surface. What is the
expected behavior of the light ray?
A. It will bend towards the normal when entering the glass.
B. It will bend away from the normal when entering the glass.
C. It will not bend at all.
D. The ray will refract in a circle.
Answer: A) It will bend towards the normal when entering the glass.
,Rationale: When light enters a denser medium like glass from air, it
bends towards the normal due to the difference in refractive indices.
3. In a simple harmonic motion experiment, which factor is most
directly related to the time period of the oscillating body?
A. Amplitude
B. Mass of the body
C. Length of the pendulum
D. Gravitational acceleration
Answer: C) Length of the pendulum
Rationale: The time period of a simple pendulum depends on its length
and gravitational acceleration. The mass and amplitude do not affect
the time period.
4. In an experiment to determine the focal length of a convex lens using
the image formed by a distant object, what must be carefully measured?
A. The distance from the lens to the object
B. The distance from the lens to the image
C. The angle of incidence
D. The angle of refraction
Answer: B) The distance from the lens to the image
, Rationale: The focal length of a convex lens is determined by
measuring the distance from the lens to the image when the object is at
a sufficiently large distance.
5. When measuring the voltage across a resistor in a circuit, which
device should be connected in parallel?
A. Ammeter
B. Voltmeter
C. Galvanometer
D. Thermistor
Answer: B) Voltmeter
Rationale: A voltmeter is designed to measure the potential difference
across components and should be connected in parallel to the resistor.
6. Which equipment is used to measure the specific heat capacity of a
substance in the laboratory?
A. Calorimeter
B. Thermometer
C. Voltmeter
D. Barometer
Answer: A) Calorimeter
