MHT CET 2023 9th May Evening Shift | MHT CET Year Wise Previous Years Questions

If a ray of light in denser medium strikes a rarer medium at angle of incidence $$i$$, the angles of reflection and refraction are $$r$$ and $$r^{\prime}$$ respectively. If the reflected and refracted rays are at right angles to each other, the critical angle for the given pair of media is

$$\sin ^{-1}\left(\tan r^{\prime}\right)$$

$$\sin ^{-1}(\tan r)$$

$$\tan ^{-1}(\sin \mathrm{i})$$

$$\cot ^{-1}(\tan \mathrm{i})$$

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

-0

A spring has a certain mass suspended from it and its period for vertical oscillations is '$$T_1$$'. The spring is now cut in to two equal halves and the same mass is suspended from one of the halves. The period of vertical oscillations is now '$$\mathrm{T}_2$$'. The ratio $$\mathrm{T}_1 / \mathrm{T}_2$$ is

$$\sqrt{2}$$

$$\frac{1}{\sqrt{2}}$$

$$\frac{1}{2}$$

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

-0

When photons of energies twice and thrice the work function of a metal are incident on the metal surface one after other, the maximum velocities of the photoelectrons emitted in the two cases are $$\mathrm{v}_1$$ and $$\mathrm{v}_2$$ respectively. The ratio $$\mathrm{v}_1: \mathrm{v}_2$$ is

$$\sqrt{2}: 1$$

$$\sqrt{3}: 1$$

$$\sqrt{3}: \sqrt{2}$$

$$1: \sqrt{2}$$

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