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MHT CET Physics Model Test 05 MHT - CET - MHT CET Physics Model Test 05

Maharashtra Board - STD 12 Science - MHT - CET (MSBSHSE - English Medium). 50 questions in this chapter.

Question types

MHT CET Physics Model Test 05 question types

50 questions across 1 question group — pick any mix to generate a MHT - CET paper with step-by-step answer keys.

50
Questions
1
Question groups
5
Question types
Sample Questions

MHT CET Physics Model Test 05 questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Two radioactive materials $Y_1$ and $Y_2$ have decay constants '5`lambda`' and `lambda` respectively. Initially they have same number of nuclei. After time 't', the ratio of number of nuclei of $Y_1$ to that of $Y_2$ is `1/"e"`, then 't' is equal to ______.
  • A
    `lambda`
  • B
    `"e"/lambda`
  • C
    `lambda/2`
  • ✓
    `1/(4lamda)`

Answer: D.

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Q 2MCQ1 Mark
Two protons are kept at a separation of 10 nm. Let $\mathrm{F}_{\mathrm{n}}$ and $\mathrm{F}_{\mathrm{e}}$ be the nuclear force and the electromagnetic force between them ____________.
  • A
    $\mathrm{F}_{\mathrm{e}}=\mathrm{F}_{\mathrm{n}}$
     
  • ✓
    $\mathrm{F}_{\mathrm{e}} \gg \mathrm{F}_{\mathrm{n}}$
  • C
    $F_e$ and $F_n$ differ only slightly
  • D
    $\mathrm{F}_{\mathrm{e}} \ll \mathrm{F}_{\mathrm{n}}$

Answer: B.

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Q 3MCQ1 Mark
With the increase in principal quantum number, the energy difference between the two successive energy levels ____________.
  • A
    increases
  • ✓
    decreases
  • C
    sometimes increases and sometimes decreases
  • D
    remains constant

Answer: B.

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Q 4MCQ1 Mark
A parallel beam of light is incident normally on a perfectly absorbing surface. If the force exerted by the light beam on the surface is $2 \times 10^{-7} \mathrm{~N}$ in 10 nanoseconds, the energy of photons hitting the surface is ____________.
  • A
    500 nJ
  • ✓
    600 nJ
  • C
    700 nJ
  • D
    400 nJ

Answer: B.

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Q 5MCQ1 Mark
For a photocell, work function is $W_0$ and stopping potential is $v$. The wavelength of the incident radiation is (h =Planck's constant, C = velocity of light, e = charge of electron) ____________.
  • A
    $(h^2c^2)/(W_0 + eV)$
  • ✓
    $(hc)/(W_0 + eV)$
  • C
    $(hc)/(W_0 - eV)$
  • D
    $(h^2c^2)/(W_0 + e^2V)$

Answer: B.

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