Miscellaneous Physics Part-1

Total Questions: 50

11. Tata Institute of Fundamental Research is located in - [R.A.S/R.T.S. (Pre) 2003]

(a) Bangalore
(b) Kolkata
(c) Delhi
(d) Mumbai

Correct Answer: (d) Mumbai

Solution:"It is the duty of people like us to stay in our own country and build up outstanding schools of research such as some other countries are fortunate to process." This was the vision that guided the Tata Institute of Fundamental Research, which Homi Bhabha founded on June 1, 1945, with the support of Sir Dorabji Tata. It is located in Mumbai.

12. Full form of LASER is - [Jharkhand P.C.S. (Pre) 2003]

(a) Log Amplification by stimulated emission of radiation.
(b) Light amplification by stimulated emission of radiation.
(c) Locally amplified by stimulated emission of radiation.
(d) Light amplification by stimulated emission of radio.

Correct Answer: (b) Light amplification by stimulated emission of radiation.

Solution:The full form of LASER is "Light Amplification by Stimulated Emission of Radiation." A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The first LASER was built in 1960 by the Russian scientist N.S. Basov and A.M. Prokhorov. The theoretical base came from C.H. Townes in 1965. These three physicists received the Nobel Prize for their work.

13. Laser is a device for producing - [U.P.P.C.S. (Pre) 2012]

(a) Spontaneous radiation
(b) Dispersed radiation
(c) Scattered radiation
(d) Stimulated radiation

Correct Answer: (d) Stimulated radiation

14. With reference to the first man-made Ruby Laser, which of the following statement/s is/are correct? [U.P.R.O/A.R.O. (Pre) 2023]

(1) Ruby Laser produced pulses of blue light.
(2) Ruby Laser produced pulses of red light.

Select the correct answer using the code given below:

(a) Neither (1) nor (2)
(b) Only (2)
(c) Both (1) and (2)
(d) Only (1)

Correct Answer: (b) Only (2)

Solution:

The first functional laser, built by Theodore Maiman at Hughes Research Laboratories in 1960, used a synthetic ruby crystal as its gain medium. When this crystal was "pumped" with a high-intensity flash lamp, the chromium atoms within the ruby crystal were excited to a higher energy level. As these excited atoms returned to their ground state, they emitted photons of light at a specific wavelength.

The light emitted by a ruby laser is in the red region of the electromagnetic spectrum, with a wavelength of 694.3 nanometers. Furthermore, the early ruby lasers, due to their pulsed pumping mechanism, produced pulses of this red light.

15. Who is the author of 'Nuclear Reactor Time Bomb'? [U.P.P.C.S. (Pre) 2011]

(a) C.C. Park
(b) E.P. Odum
(c) S. Polasky
(d) Takashi Hirose

Correct Answer: (d) Takashi Hirose

Solution:

Takashi Hirose is a Japanese journalist and author known for his critical works on nuclear power.'Nuclear Reactor Time Bomb' is one of his notable books that explores the potential dangers and risks associated with nuclear reactors.

16. Match List-I with List-II and select the correct answer using the codes given below the list: [U.P. Lower Sub. (Pre) 2008]

List-I	List-II
A. Revolver	1. Alfred Nobel
B. Dynamite	2. Pascal
C. Law of Cooling	3. Colt
D. Law of Pressure	4. Newton

Code	A	B	C	D
(a)	1	3	2	4
(b)	1	3	4	2
(c)	3	1	2	4
(d)	3	1	4	2

Correct Answer: (d)

Solution:The correctly matched order is:

Revolver: Samuel Colt
Dynamite: Alfred Nobel
Law of Cooling: Newton
Law of Pressure: Pascal

17. Which of the following pair is used to form the terminals of a normal torch cell? [U.P.P.C.S. (Mains) 2010]

(a) Zinc - Carbon
(b) Copper - Zinc
(c) Zinc - Cadmium
(d) Carbon - Copper

Correct Answer: (a) Zinc - Carbon

Solution:Generally, dry cells are used in the touch ,whose anode is made up Zinc while the cathode is made up of carbon.

18. A.T.M. means — [U.P.R.O/A.R.O. (Mains) 2014]

(a) Automatic Transaction Machine
(b) Automatic Transfer Machine
(c) Automated Teller Machine
(d) Advance Transaction Machine

Correct Answer: (c) Automated Teller Machine

Solution:ATM is short for Automated Teller Machine. Basically, the ATM is used to perform banking transactions like withdrawal of money and to view bank statements.

19. Which one of the following links all the ATMs in India? [I.A.S. (Pre) 2018]

(a) Indian Banks' Association
(b) National Securities Depository Limited
(c) National Payments Corporation of India
(d) Reserve Bank of India

Correct Answer: (c) National Payments Corporation of India

Solution:National Financial Switch (NFS) is the largest network of shared Automated Teller Machines (ATMs) in India. It was designed, developed, and deployed by the Institute for Development and Research in Banking Technology (IDRBT) in 2004, with the goal of interconnecting the ATMs in the country and facilitating convenience banking. It is run by the National Payments Corporation of India (NPCI). NPCI took over the operations of National Financial Switch (NFS) from the IDRBT in 2009.

20. Which technology of the 21st century can do wonders in device miniaturization? [U.P.P.C.S. (Mains) 2004]

(a) Atomic laser technique
(b) Nanotechnology
(c) Gynecology
(d) Hydroponics

Correct Answer: (b) Nanotechnology

Solution:Nanotechnology is science, engineering, and technology conducted at the nanoscale, which is about 1 to 100 nanometres.

1 nanometre = metre. With the help of nanotechnology, we can easily make micro-accessories and equipment.

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