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What is the Principle of an Electric motor?
Concept: Electric Motor
What is the Principle of an Electric motor?
Concept: Electric Motor
What is a solenoid?
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Long Straight Solenoid
What is a solenoid?
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Long Straight Solenoid
Give a scientific reason:
Danger signals are red in colour.
Concept: Some Natural Phenomena Due to Sunlight
State the rule to determine the direction of a magnetic field produced around a straight conductor-carrying current.
Concept: Right-hand Thumb Rule
Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
Concept: Heating Effect of Electric Current
Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
Concept: Heating Effect of Electric Current
State the rule to determine the direction of a magnetic field produced around a straight conductor-carrying current.
Concept: Right-hand Thumb Rule
Explain the construction and working of an electric generator (AC) with the help of a neat diagram.
Concept: A.C. Generator
Observe the given figure showing the orbit of a planet moving around the Sun and write the three laws related to it:
The orbit of a planet moving around the Sun
Concept: Kepler’s Laws
Observe the following diagram and answer the questions given below:
- Identify the above diagram. (1)
- Write the principle on which the above appliance works. (1)
- Write the working of the above appliance. (2)
- Write the use of the above appliance. (1)
Concept: Electric Generator
How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?
Concept: Specific Heat Capacity
Give a scientific reason.
Simple microscope is used for watch repairs.
Concept: Magnification
Give a scientific reason.
Simple microscope is used for watch repairs.
Concept: Magnification
Solve the problem.
If the mass of a planet is eight times the mass of the Earth and its radius is twice the radius of the Earth, what will be the escape velocity for that planet?
Concept: Free Fall
Alkaline earth metals have valency 2. This means that their position in the modern periodic table is in ______.
Concept: Classification of Elements
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
Concept: Periodic Properties >> Atomic Size
Write scientific reason.
Elements belonging to the same group have the same valency.
Concept: Periodic Trends in the Modern Periodic Table
