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
Red colour lights are used for emergency purposes because
It has a long wavelength.
It has high frequency.
It carries high energy.
It has high density.
Match the components with their functions in an electric circuit:
A. Resistor
A-2, B-4, C-1, D-3
A-2, B-1, C-4, D-3
A-3, B-1, C-4, D-2
A-1, B-2, C-3, D-4
With reference to the Light year, which of the following statement is correct?
It is the unit of length used to measure the wavelength of light.
It is the unit of length used to measure nuclear distances.
It is the unit of length for measuring astronomical distances.
It is the Mean distance between the sun and earth
Consider the following statements:
1. A transistor is a semiconductor device with two terminals, capable of amplification and rectification.
2. A small electric current flowing through one part of a transistor can make a much larger current flow through the other part.
Which of the above-given statements is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Which of the following are the effects of surface tension?
1. Water beading on a leaf
2. Soap bubbles
3. Separation of oil and water
4. Tears of wine
Select the correct answer using the codes given below:
1 and 3 only
2 and 3 only
1, 3 and 4 only
1, 2, 3 and 4
Match the terms in column A with their descriptions in column B.
Column A
Column B
(a) Amplitude
(i) Number of sound waves per second
(b) Frequency
(ii) Height of a sound wave
(c) Echo
(iii) Reflected sound
(d) Pitch
(iv) Perception of how high or low a sound seems
a - iv, b - iii, c - i, d - ii
a - ii, b - i, c - iii, d - iv
a - iii, b - ii, c - iv, d - i
a - i, b - iv, c - ii, d - iii
Consider the following statements about optical fiber cables:
1. They are one of the key infrastructures for the 5G network in India.
2. They work on the principle of total internal reflection.
Which of the statements given above is/are correct?
What is the acceleration-time graph of the body when it is at stationary phase or moving in uniform velocity?
Parallel to the time axis
Parallel to the time axis on negative acceleration axis
curve of any shape
straight line coinciding with time axis.
Consider the following:
1. Water is more viscous than blood.
2. Blood is more viscous than water.
3. They cannot be compared.
Which of the above is the best relation between the viscosities of blood and water?
1 and 2 only
1, 2, and 3
Which one of the following is the unit of length used to measure nuclear distances?
Parsec
Fermi
Nanometer
Barn
