Modern Physics — Part 2 MCQs with Explanations

All of the above is the correct answer to “The Nuclear doctrine of India contains”. This question is standard in competitive examination syllabi for Modern Physics.

Hyderabad is the correct answer to “The Nuclear Fuel Complex is situated at . . . . . . . .”. This question is standard in competitive examination syllabi for Modern Physics.

cadmium is the correct answer to “In a nuclear reactor, . . . . . . . . is used to control the rate of fission reaction which itself absorbs neutrons without fission.”. This question is standard in competitive examination syllabi for Modern Physics.

Zener diode is the correct answer to “Which of the following is used for regulated electric supply”. This question is standard in competitive examination syllabi for Modern Physics.

1 and 2 is the correct answer to “Consider the following statements about visible light, UV light and X-ray. 1. The wavelength of visible light is more than that of X-ray. 2. The energy of X-ray photons is higher than that of UV light photons. 3. The energy of UV light photons is less than that of visible light photons. Which of the statement(s) given above is/are correct”. This question is standard in competitive examination syllabi for Modern Physics.

charged particles emitted by nucleus is the correct answer to “Beta rays emitted by a radioactive material are”. This question is standard in competitive examination syllabi for Modern Physics.

Two light nuclei form a heavy nucleus is the correct answer to “During nuclear fusion,”. This question is standard in competitive examination syllabi for Modern Physics.

transistor is the correct answer to “The device which transfer the signal from low resistance region to high resistance region is”. This question is standard in competitive examination syllabi for Modern Physics.

22 is the correct answer to “As of November 2020, how many nuclear power reactors are operating in India”. This question is standard in competitive examination syllabi for Modern Physics.

Solar cells is the correct answer to “What is the source of electrical energy in an artificial satellite”. This question is standard in competitive examination syllabi for Modern Physics.

neither an electric field nor magnetic field is the correct answer to “γ-rays are deflected by”. This question is standard in competitive examination syllabi for Modern Physics.

Only 1 and 3 is the correct answer to “Consider the following statements. In a nuclear reactor, self-sustained chain reaction is possible because 1. More neutrons are released in each of the fission reactions. 2. The neutrons immediately take park in the fission process. 3. The fast neutrons are slowed down by graphite. 4. Every neutron released in the fission reaction initiates further fission. Which of these statements are correct”. This question is standard in competitive examination syllabi for Modern Physics.

intensity of incident beam is the correct answer to “In photoelectic effect, the number of photo electrons emitted is proportional to”. This question is standard in competitive examination syllabi for Modern Physics.

consist of quanta is the correct answer to “Photoelectric effect can be explained by assuming that light”. This question is standard in competitive examination syllabi for Modern Physics.

Rajasthan is the correct answer to “In which state is Pokhran, the site of India's first nuclear explosion, located”. This question is standard in competitive examination syllabi for Modern Physics.

It did not give an idea about the discrete energy level is the correct answer to “Why was the Thomson's model of an atom failed”. This question is standard in competitive examination syllabi for Modern Physics.

India and Britain is the correct answer to “The Newton-Bhabha Fund Program was a joint initiative of”. This question is standard in competitive examination syllabi for Modern Physics.

They are radio isotopes is the correct answer to “In the modem day's nuclear medicine plays a vital role in Medical Science, it is exactly”. This question is standard in competitive examination syllabi for Modern Physics.

Smiling Buddha is the correct answer to “The official code name of Pokhran nuclear test 1974, was”. This question is standard in competitive examination syllabi for Modern Physics.

Solar cells is the correct answer to “Photovoltaic cells are”. This question is standard in competitive examination syllabi for Modern Physics.

Hyderabad is the correct answer to “Where is the Nuclear Fuel Complex of India situated”. This question is standard in competitive examination syllabi for Modern Physics.

Wilhelm Roentgen is the correct answer to “X-rays, now used daily in medicine for diagnosis, were discovered by”. This question is standard in competitive examination syllabi for Modern Physics.

Dhruva is the correct answer to “Which one of the following is a nuclear research reactor operated by Bhabha Atomic Research Centre”. This question is standard in competitive examination syllabi for Modern Physics.

protons and neutrons only is the correct answer to “Atomic mass of an element is equal to the sum of number of”. This question is standard in competitive examination syllabi for Modern Physics.

100 million K is the correct answer to “Nuclear Fusion' is the process of combining of two or more light nuclei. What is the required temperature (approximately) for nuclear fusion”. This question is standard in competitive examination syllabi for Modern Physics.

Homi Jehangir Bhabha is the correct answer to “The Atomic Energy Institute in Mumbai was renamed in honor of which Indian nuclear physicist”. This question is standard in competitive examination syllabi for Modern Physics.

Tarapur is the correct answer to “Which one of the following is India's first nuclear plant”. This question is standard in competitive examination syllabi for Modern Physics.

infrared ray is the correct answer to “Remote-sensing device has an inbuilt source of”. This question is standard in competitive examination syllabi for Modern Physics.

Option "not deflected by an electric field and a magnetic field" is the correct answer for this question under Modern Physics.

stable is the correct answer to “If a U 238 nucleus splits into two identical parts, the two nuclei so produced will be”. This question is standard in competitive examination syllabi for Modern Physics.

Protons and neutrons is the correct answer to “Which of the following particles are constituents of the nucleus”. This question is standard in competitive examination syllabi for Modern Physics.

X-ray is the correct answer to “Among the following radiations, which has the highest energy”. This question is standard in competitive examination syllabi for Modern Physics.

Fission reaction is the correct answer to “Which type of reaction produces the most harmful radiation”. This question is standard in competitive examination syllabi for Modern Physics.

1, 2 and 3 is the correct answer to “Which of the following statements are true? 1. All radioactive elements decay exponentially with time. 2. Half-life time of radioactive elements is the time required for one-half of the radioactive atoms to disintegrate. 3. Age of the earth can be determined by radioactive dating. 4. Half-life time of a radioactive element is fifty percent of its average life period. Select the correct answer:”. This question is standard in competitive examination syllabi for Modern Physics.

Thorium is the correct answer to “The important nuclear fuel available in India in abundance is”. This question is standard in competitive examination syllabi for Modern Physics.

α-particle rays is the correct answer to “Positive rays are very identical to”. This question is standard in competitive examination syllabi for Modern Physics.

work function is the correct answer to “The minimum energy required for the emission of photoelectron from a metal is called”. This question is standard in competitive examination syllabi for Modern Physics.

radiowaves is the correct answer to “Waves that are required for long distance wireless communication are”. This question is standard in competitive examination syllabi for Modern Physics.

Decay of $$\frac{3}{4}$$ part of substance in 20 days is the correct answer to “The half-life of a radioactive substance is 10 days; it means there will be”. This question is standard in competitive examination syllabi for Modern Physics.

not stationary is the correct answer to “According to the Rutherford's Atomic Model, the electrons inside the atom are”. This question is standard in competitive examination syllabi for Modern Physics.