1
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

If two sources emit light waves of different amplitudes then

A
brightness of fringes is less.
B
fringes disappear after short time.
C
fringe width is less.
D
there is some intensity of light in the region of destructive interference.
2
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment, the $$10^{\text {th }}$$ maximum of wavelength '$$\lambda_1$$' is at a distance of '$$Y_1$$' from the central maximum. When the wavelength of the source is changed to '$$\lambda_2$$', $$5^{th}$$ maximum is at a distance '$$Y_2$$' from the central maximum. The ratio $$\frac{Y_1}{Y_2}$$ is

A
$$\frac{2 \lambda_1}{\lambda_2}$$
B
$$\frac{\lambda_2}{2 \lambda_1}$$
C
$$\frac{2 \lambda_2}{\lambda_1}$$
D
$$\frac{\lambda_1}{2 \lambda_2}$$
3
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A single slit diffraction pattern is formed with white light. For what wavelength of light the $$3^{\text {rd }}$$ secondary maximum in diffraction pattern coincides with the $$2^{\text {nd }}$$ secondary maximum in the pattern of red light of wavelength 6000 $$\mathop A\limits^o $$ ?

A
4500 $$\mathop A\limits^o $$
B
3500 $$\mathop A\limits^o $$
C
4000 $$\mathop A\limits^o $$
D
5000 $$\mathop A\limits^o $$
4
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The width of central maximum of a diffraction pattern on a single slit does not depend upon

A
frequency of light used
B
width of the slit
C
distance between slit and source
D
wavelength of light used
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