- AUniform Distribution
- BNormal Distribution
- CBinomial Distribution
- DPoisson Distribution
দেশ-মহাদেশ - Quiz
- ARandom Variable
- BEvent
- CPopulation
- DSample
- ADiscrete
- BContinuous
- CAll the options
- DNone of the options
- A340 m/s
- B1500 m/s
- C3000 m/s
- D5000 m/s
- ASound intensity is a measure of the amount of energy in a sound wave, while sound pressure is a measure of the force exerted by a sound wave on a surface.
- BSound intensity is a measure of the loudness of a sound, while sound pressure is a measure of the frequency of a sound.
- CSound intensity is a measure of the wavelength of a sound wave, while sound pressure is a measure of the speed of sound.
- DSound intensity and sound pressure are the same thing.
- AThe speed of light is constant in all media.
- BThe speed of light is greater in a vacuum than in a medium.
- CThe speed of light is lower in a vacuum than in a medium.
- DThe speed of light is higher in a medium than in a vacuum.
- A Red
- BGreen
- CBlue
- DYellow
- ADiffraction
- BInterference
- CPolarization
- DChange in speed
- AConvex lens
- BConcave lens
- CPlano-convex lens
- DBiconcave lens
- ARed
- BGreen
- CBlue
- DYellow
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দেশ-মহাদেশ - Quiz
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Time Taken: Questions: Answered: Not Answered:
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Percentage: %
- A. Uniform Distribution
- B. Normal Distribution
- C. Binomial Distribution
- D. Poisson Distribution
Remarks:
Explanation:
The correct answer is "Poisson Distribution". The Poisson distribution is a discrete probability distribution that is often used to model the number of events occurring in a fixed interval of time or space, given the average number of events that occur during that interval. It is commonly used in fields such as insurance, finance, and telecommunications to model rare events such as accidents, equipment failures, or phone calls received per unit of time. The Poisson distribution is characterized by a single parameter λ (lambda), which represents the average rate of occurrence of the event.
- A. Random Variable
- B. Event
- C. Population
- D. Sample
Remarks:
Explanation: The correct answer is "Random Variable". A random variable is a variable that takes on numerical values that are determined by the outcome of a statistical experiment. In other words, a random variable is a numerical representation of the outcomes of a random process. Random variables can be discrete or continuous, depending on whether they take on a countable or uncountable number of values, respectively. They are a fundamental concept in probability theory and statistics and are used to model a wide range of phenomena in many fields, including economics, engineering, and biology.
- A. Discrete
- B. Continuous
- C. All the options
- D. None of the options
Remarks:
Explanation: The correct answer is "Continuous". A continuous random variable is a variable that can take on any value in a given range or interval. It can take on an infinite number of values, and the values can be measured to any degree of accuracy, including decimals and fractions. Continuous random variables are often used to model phenomena that can take on a wide range of values, such as height, weight, and time. In contrast, a discrete random variable can only take on a finite or countably infinite number of values.
- A. 340 m/s
- B. 1500 m/s
- C. 3000 m/s
- D. 5000 m/s
Remarks:
Explanation:
Answer: a) 340 m/s
Explanation: The speed of sound in air at room temperature is approximately 340 meters per second.
- A. Sound intensity is a measure of the amount of energy in a sound wave, while sound pressure is a measure of the force exerted by a sound wave on a surface.
- B. Sound intensity is a measure of the loudness of a sound, while sound pressure is a measure of the frequency of a sound.
- C. Sound intensity is a measure of the wavelength of a sound wave, while sound pressure is a measure of the speed of sound.
- D. Sound intensity and sound pressure are the same thing.
Remarks:
Explanation:
Answer: a) Sound intensity is a measure of the amount of energy in a sound wave, while sound pressure is a measure of the force exerted by a sound wave on a surface.
Explanation: Sound intensity is a measure of the amount of energy that is carried by a sound wave per unit area, while sound pressure is a measure of the force exerted by the sound wave on a surface per unit area.
- A. The speed of light is constant in all media.
- B. The speed of light is greater in a vacuum than in a medium.
- C. The speed of light is lower in a vacuum than in a medium.
- D. The speed of light is higher in a medium than in a vacuum.
Remarks:
Explanation:
Answer: a) The speed of light is constant in all media.
Explanation: The speed of light is a fundamental constant of nature and is always the same in a vacuum, air, water, glass, or any other medium.
- A. Red
- B. Green
- C. Blue
- D. Yellow
Remarks:
Explanation:
Answer: a) Red
Explanation: Red light has the longest wavelength of visible light, while violet light has the shortest.
- A. Diffraction
- B. Interference
- C. Polarization
- D. Change in speed
Remarks:
Explanation:
Answer: d) Change in speed
Explanation: Refraction is the bending of light as it passes through a medium with a different density, which causes a change in its speed.
- A. Convex lens
- B. Concave lens
- C. Plano-convex lens
- D. Biconcave lens
Remarks:
Explanation:
Answer: b) Concave lens
Explanation: A concave lens is thinner at the center and thicker at the edges, which causes light rays to diverge. This helps to correct the focus of the eye in people who are nearsighted.
- A. Red
- B. Green
- C. Blue
- D. Yellow
Remarks:
Explanation:
Answer: d) Yellow
Explanation: The primary colors of light are red, green, and blue. Yellow is a secondary color that is produced by combining red and green light.