MHT CET 2020 19th October Evening Shift | MHT CET Year Wise Previous Years Questions

The energy levels with transitions for the atom are shown. The transitions corresponding to emission of radiation of maximum and minimum wavelength are respectively

MHT CET 2020 19th October Evening Shift Physics - Atoms and Nuclei Question 4 English

B, C

A, C

C, D

A, D

MHT CET 2020 19th October Evening Shift

MCQ (Single Correct Answer)

-0

A milliammeter of resistance $40 \Omega$ has a range $0-30 \mathrm{~mA}$. What will be the resistance used in series to convert it into voltmeter of range $0-15 \mathrm{~V}$ ?

$460 \Omega$

$920 \Omega$

$640 \Omega$

$560 \Omega$

MHT CET 2020 19th October Evening Shift

MCQ (Single Correct Answer)

-0

A child starts running from rest along a circular track of radius $r$ with constant tangential acceleration a. After time $t$ he feels that slipping of shoes on the ground has started. The coefficient of friction between shoes and the ground is

[g = acceleration due to gravity]

$\frac{\left[a^4 t^4+a^2 r^2\right]^{\frac{1}{2}}}{g r}$

$\frac{\left[a^4 t^4+a^2 r^2\right]}{r g}$

$\frac{\left[a^2 t^2+a^4 r^4\right]}{r g}$

$\frac{\left[a^4 t^4-a^2 r^2\right]^{\frac{1}{2}}}{r g}$

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