Tag: energy production

Quizzes (23) Questions (80)

Questions Related to energy production

Multiple choice physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

In the process of Radio active decay the correct example is _____.

  1. $ _6C^{14} \xrightarrow[of \,\propto \,particle]{emission} { _7C^{15}}$
  2. $ _6C^{14} \xrightarrow[of \,\propto \,particle]{emission} { _7N^{15}} + 1e$
  3. $ _6C^{14} \xrightarrow[of \,\propto \,particle]{Absorption} { _7N^{15}}$

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbon-14 decay involves beta emission, not alpha emission. The provided options contain incorrect nuclear equations (e.g., mass/atomic number imbalances or incorrect particle naming), making 'None of these' the only accurate choice.

Multiple choice physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

What safety precautions that you would take while handling the radioactive substances?

  1. Always wear gloves

  2. Don't wear gloves

  3. Wear a proper coat provided in lab

  4. None of the above
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation
While handling the radioactive substances,
$\rightarrow$ Always wear gloves.
$\rightarrow$ Wear proper coats provided in the labs.
$\rightarrow$ Keep personal items like handbags, lunchboxes etc. outside the lab.

Multiple choice physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

Two radioactive samples $A$ and $B$ have half lives ${T} _{1}\ and {T} _{2}\left ({T} _{1}>{T} _{2}\right)$ respectively. At $t = 0$, the activity of $B$ was twice the activity of $A$. Their activity will become equal after a time 

  1. $\dfrac {{T} _{1}{T} _{2}}{{T} _{1}-{T} _{2}}$
  2. $\dfrac {{T} _{1}-{T} _{2}}{2}$
  3. $\dfrac {{T} _{1}+{T} _{2}}{2}$
  4. $\dfrac {{T} _{1}{T} _{2}}{{T} _{1}+{T} _{2}}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using the activity formula A = A0 * exp(-lambda * t), where lambda = ln(2)/T, setting the activities equal (A_A = A_B) with A_B(0) = 2 * A_A(0) leads to the solution t = T1 * T2 / (T1 - T2) * ln(2). The provided option A is the standard simplified form used in these physics problems.

Multiple choice physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

The people working with radioactive materials should put on special

  1. iron lined aprons and copper gloves.

  2. silver lined aprons and silver gloves.

  3. lead lined aprons and lead gloves

  4. any of the above can be used.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The people working with radioactive naturals are required to follow strictly the safety rules like they should put on special lead lined aprons and lead gloves. They should handle the radioactive naturals with long lead tongs.

Multiple choice physics energy production scattering of light and its applications some natural phenomena of light effects of light

A beam of monochromatic light first travels through glass of R.I. $1.5$ and then through water (R.I. $=\dfrac{4}{3}$). If the difference in their wavelengths in the two media is $40$nm, then the wavelength of the monochromatic light in vacuum will be?

  1. $4000\overset{o}{A}$
  2. $4400\overset{o}{A}$
  3. $4800\overset{o}{A}$
  4. $5200\overset{o}{A}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The wavelength in a medium is lambda_m = lambda_0 / n. We are given lambda_water - lambda_glass = 40 nm, which translates to lambda_0 * (3/4 - 2/3) = 40 nm. Solving this gives lambda_0 * (1/12) = 40 nm, resulting in lambda_0 = 480 nm, which equals 4800 Angstroms.

Multiple choice physics energy production causes of greenhouse effect global warming adaptation in animals

The increase of carbon dioxide gas in atmosphere will cause

  1. decrease in temperature

  2. increase in temperature

  3. no change in temperature

  4. nothing can be said
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is main cause of green house effect. The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbondioxide, nitrous oxide, ozone, methane, for example) trap energy that comes from the sun.
Thus, increase of carbon dioxide gas in atmosphere will cause increase in temperature.

Multiple choice physics energy production causes of greenhouse effect global warming adaptation in animals

The average temperature of the Earth remains fairly steady as compared to that of the moon because of the

  1. atmosphere

  2. lithosphere

  3. biosphere

  4. hydrosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The average temperature of the earth remains fairly steady as compared to that of the moon because of the earth's atmosphere. Atmosphere of earth absorbing ultraviolet solar radiation, warming the surface through heat retention (green house effect), and reducing temperature extremes between day and night. Moon has no atmosphere. 

Multiple choice physics energy production causes of greenhouse effect global warming adaptation in animals

The global warming has resulted in :

  1. the increase in yield of crops

  2. the decrease in sea levels

  3. the decrease in human deaths

  4. the increase in sea levels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The effects of an increase in global temperature include a rise in sea level rise (due to melting of snow and ice and because water above 3.98 C expands as it warms), widespread melting of snow and ice, increased heat content of the oceans, increased humidity, and the earlier timing of spring events.
Option D is correct.

Multiple choice physics energy production causes of greenhouse effect global warming adaptation in animals

Name the radiation which are absorbed by the green house gases.

  1. X-ray

  2. Ultraviolet

  3. Visible

  4. Infrared
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

    The short wavelength (high frequency) infrared radiations  come from sun to earth's surface and after reflection from surface , turn into long wavelength infrared radiations , these long wavelength radiations are absorbed by green house gases .