1
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

A light wave of wavelength $$\lambda$$ is incident on a slit of width $$d$$. The resulting diffraction pattern is observed on a screen at a distance $$D$$. If linear width of the principal maxima is equal to the width of the slit, then the distance $$D$$ is

A
$$\frac{2 \lambda}{d}$$
B
$$\frac{d^2}{2 \lambda}$$
C
$$\frac{2 \lambda^2}{d}$$
D
$$\frac{d}{\lambda}$$
2
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

The damping force of an oscillator is directly proportional to the velocity. The unit of constant of proportionality is

A
$$\mathrm{kg}~ \mathrm{ms}^{-1}$$
B
$$\mathrm{kg} ~\mathrm{s}^{-1}$$
C
$$\mathrm{kg} ~\mathrm{ms}^{-2}$$
D
kg-s
3
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic susceptibility of a paramagnetic material at $$-73^{\circ} \mathrm{C}$$ is 0.0075. Its value at $$-173^{\circ} \mathrm{C}$$ will be

A
0.0150
B
0.0075
C
0.0030
D
0.0045
4
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

A particle performs simple harmonic motion with period of 3 s . The time taken by it to cover a distance equal to half the amplitude from mean position is [$$\sin 30^{\circ}=0.5$$]

A
$$\frac{1}{4} \mathrm{~s}$$
B
$$\frac{3}{2} \mathrm{~s}$$
C
$$\frac{3}{4} \mathrm{~s}$$
D
$$\frac{1}{2} \mathrm{~s}$$
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