Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
The following figure shows displacement versus time curve for a particle executing simple harmonic motion:
Which one of the following statements is correct?
Phase of the oscillating particle is same at t = 1 s and t = 3 s
Phase of the oscillating particle is same at t = 2 s and t = 8 s
Phase of the oscillating particle is same at t = 3 s and t = 7 s
Phase of the oscillating particle is same at t = 4 s and t = 10 s
A circular coil of single turn has a resistance of 20 Ω. Which one of the following between the ends of any diameter of the coil?
5 Ω
10 Ω
30 Ω
40 Ω
The time period of a simple pendulum made using a thin copper wire of length L is T. Suppose the temperature of the room in which this simple pendulum is placed increases by 30oC, what will be the effect on the time period of the pendulum?
T will increase slightly
T will remain the same
T will decrease slightly
T will become more than 2 times
Which one of the following statements is correct with regard to the material of electrical insulators?
They contain no electrons
Electrons do not ow easily through them
They are crystals
They have more number of electrons than the protons on their surface
Which one of the following physical quantities does NOT affect the resistance of a cylindrical resistor?
The current through it
Its length
The resistivity of the material used in the resistor
The area of cross-section of the cylinder
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