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Aanya   from R. N Podar , Mumbai
Subject :Physics    Class : Class 6

A magnetic field is described by drawing the magnetic field lines. The magnetic field lines always begin from the north pole of magnet and end on the south pole of the magnet. They do not intersect one another. They come closer to one another near the poles but they are widely separated at other places.
The direction of magnetic field lines is

A north to south
B south to north
C both (A) and (B)
D neither (A) nor (B)


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Divita Saxena   from BVM Ashti, nagpur (Maharashtra)
Subject :Physics    Class : Class 8

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MOUNIKA MONDAL   from The Newtown School, Kolkata
Subject :Physics    Class : Class 6

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : The beating of heart is repetitive.
Reason : The beating of heart is a type of periodic motion.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.


why not the option A is true?

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Aryan Ghanshyam Deshmukh   from B K Birla Public School Kalyan, Kalyan
Subject :Physics    Class : Class 6

If the same motion occurs again and again, it is said to be repetitive motion. Repetitive motion that repeats itself at regular intervals of time is called periodic motion. A pendulum undergoes periodic motion. The time taken by a pendulum to complete its one oscillation is known as its time period. Frequency of a pendulum is defined as the number of oscillations completed in 1 second.
If the time taken by the pendulum from C to A is 4 s, then the time taken by it to complete its one oscillation is


A 8 s
B 12 s
C 16 s
D 4 s


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Shivyanshi   from Salwan Public School, Plot no. G-4, 16, Second Floor, Vatika India Next, Sector 82, Gurugram, Pin code: 122004
Subject :Physics    Class : Class 7

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Atheeq   from Vaels RBGS, chennai
Subject :Physics    Class : Class 6

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Atheeq   from Vaels RBGS, chennai
Subject :Physics    Class : Class 6

Ans 1:

Atheeq   from Vaels RBGS, chennai
Class : >Class 7

Ans 2:

Atheeq   from Vaels RBGS, chennai
Class : >Class 7
20

Ans 3:

Atheeq   from Vaels RBGS, chennai
Class : >Class 7
20

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Rudra Tara   from ,
Subject :Physics    Class : Class 8

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Sara deore   from st joseph, PUNE
Subject :Physics    Class : Class 7

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : Radiation is a process of transfer of heat in which a material medium is not necessary.
Reason : The heat from the sun reaches us through millions of miles of empty space by convection.

A If both assertion and reason are true and reason is the correct explanation of assertion
B If both assertion and reason are true but reason is not the correct explanation of assertion
C If assertion is true but reason is false
D If assertion is false but reason is true.

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Aryan   from ABN, Roorkee
Subject :Physics    Class : Class 7

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