Podcast
Questions and Answers
What is the dimensional formula for a light-year?
What is the dimensional formula for a light-year?
- T
- L (correct)
- T
- L
Which physical quantity does the dimensional formula [MLT] represent?
Which physical quantity does the dimensional formula [MLT] represent?
- Power
- Gravitational Constant (correct)
- Energy
- Force
Which of the following is NOT considered a fundamental quantity?
Which of the following is NOT considered a fundamental quantity?
- Force (correct)
- Time
- Mass
- Length
If the distance covered by an object is zero, what can be said about its displacement?
If the distance covered by an object is zero, what can be said about its displacement?
A car travels at a constant speed of 20 m/s for 10 seconds. What is its acceleration?
A car travels at a constant speed of 20 m/s for 10 seconds. What is its acceleration?
What is the SI unit of luminous intensity?
What is the SI unit of luminous intensity?
Which method is most suitable to increase the accuracy while measuring the diameter of a wire?
Which method is most suitable to increase the accuracy while measuring the diameter of a wire?
In projectile motion, what is the angle at which the range is maximum for a given velocity?
In projectile motion, what is the angle at which the range is maximum for a given velocity?
Newton's first law of motion is also known as:
Newton's first law of motion is also known as:
A body of mass 2 kg is moving with an acceleration of 5 m/s. What is the force acting on it?
A body of mass 2 kg is moving with an acceleration of 5 m/s. What is the force acting on it?
What remains constant during a projectile motion if air resistance is neglected?
What remains constant during a projectile motion if air resistance is neglected?
The area under a velocity-time graph represents:
The area under a velocity-time graph represents:
What physical quantity is represented by the slope of a position-time graph?
What physical quantity is represented by the slope of a position-time graph?
Which of the following is a scalar quantity?
Which of the following is a scalar quantity?
What is the angle between two vectors if their dot product is zero?
What is the angle between two vectors if their dot product is zero?
Which of the following is a necessary condition for the law of conservation of momentum to be applicable?
Which of the following is a necessary condition for the law of conservation of momentum to be applicable?
A ball is thrown vertically upwards. What is its velocity at the highest point?
A ball is thrown vertically upwards. What is its velocity at the highest point?
If vector A = 2i + 3j and vector B = 4i - 2j, what is the magnitude of the resultant vector A + B?
If vector A = 2i + 3j and vector B = 4i - 2j, what is the magnitude of the resultant vector A + B?
What is the dimensional formula for pressure?
What is the dimensional formula for pressure?
Which of the following units is equivalent to a Newton?
Which of the following units is equivalent to a Newton?
Flashcards
Light Year Dimensional Formula
Light Year Dimensional Formula
The dimensional formula for a light year is [L], representing length.
Dimensional Formula [M^-1 L^3 T^-2]
Dimensional Formula [M^-1 L^3 T^-2]
The dimensional formula [M^-1 L^3 T^-2] refers to the gravitational constant (G).
Not a Fundamental Quantity
Not a Fundamental Quantity
Force is not a fundamental quantity; it's derived from mass, length, and time (F=ma).
Zero Distance, Zero Displacement
Zero Distance, Zero Displacement
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Study Notes
Undefined Terms
- A point possesses no size, only a specific location.
- A line extends infinitely in length but has no width or thickness.
- A plane extends infinitely in both length and width, lacking any thickness.
Definitions
- An angle is created when two rays share a common endpoint.
- A right angle is exactly $90^\circ$.
- An acute angle is less than $90^\circ$.
- An obtuse angle is more than $90^\circ$ but less than $180^\circ$
- A straight angle is exactly $180^\circ$.
- Perpendicular lines intersect, making right angles.
- Parallel lines exist on the same plane and will not intersect.
- A polygon is a closed shape with at least 3 line segments.
- A triangle is a three-sided polygon.
- A quadrilateral is a four-sided polygon.
- A pentagon is a five-sided polygon.
- A hexagon is a six-sided polygon.
- A heptagon is a seven-sided polygon.
- An octagon is an eight-sided polygon.
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