Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics the human eye and the colourful world scattering of light and its applications some natural phenomena of light effects of light

CV Raman got the Nobel Prize for his experiment on :

  1. Dispersion of Light

  2. Reflection of Light

  3. Deflection of Light

  4. Scattering of Light
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

C. V. Raman got noble prize for his free, transparent sample of a chemical compound, a small fraction of the light emerges in directions other than that of the incident (incoming) beam. Here it is all about scattering of light.

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

In Raman effect, the wavelength of the incident radiation is $5890\overset{o}{A}$. The wavelengths of Stocks and anti-stocks lines are respectively.

  1. $5880\overset{o}{A}$ and $5900\overset{o}{A}$
  2. $5900\overset{o}{A}$ and $5880\overset{o}{A}$
  3. $5900\overset{o}{A}$ and $5910\overset{o}{A}$
  4. $5870\overset{o}{A}$ and $5880\overset{o}{A}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Incident wavelength=$5890 A^{0}$

  • Stocks  lines have wavelength more than the incident radiation
$\lambda _{s}>$ incident wavelength
  • Anti stocks lines have wavelength less than incident radiation
$\lambda _{as}<$ incident wavelength
So the correct option is B

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

An iron block of sides $50 cm\times 8 cm\times 15 cm$ has to be pushed along the floor. The force required will be minimum when the surface in contact with ground is

  1. $8 cm\times 15 cm $surface
  2. $50 cm\times 15 cm $surface
  3. $8 cm\times 50 cm $surface

  4. Force is same for all surfaces.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Force will be same for all the surfaces.
Hence, the correct option is $(D)$

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Fill in the blanks:

The force responsible for changing the state of motion of a moving object in contact between surface is the _______.

  1. non-contact force

  2. force of friction

  3. magnetic force

  4. muscular force
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The friction force is the force exerted by a surface an object moving across it. It acts in a direction to oppose the relative motion between objects.