1
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+2
-0

Three fair coins with faces numbered 1 and 0 are tossed simultaneously. Then variance (X) of the probability distribution of random variable $$\mathrm{X}$$, where $$\mathrm{X}$$ is the sum of numbers on the upper most faces, is

A
0.7
B
0.75
C
0.65
D
0.6
2
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+2
-0

If $$\mathrm{f}(x)=x^2+1$$ and $$\mathrm{g}(x)=\frac{1}{x}$$, then the value of $$\mathrm{f}(\mathrm{g}(\mathrm{g}(\mathrm{f}(x))))$$ at $$x=1$$ is

A
4
B
1
C
5
D
3
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A glass prism deviates the red and violet rays through $$9^{\circ}$$ and $$11^{\circ}$$ respectively. A second prism of equal angle deviates them through $$11^{\circ}$$ and $$13^{\circ}$$ respectively. The ratio of dispersive power of second prism to first prism is

A
5 : 6
B
6 : 5
C
9 : 13
D
13 : 9
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Eight small drops of mercury each of radius '$$r$$', coalesce to form a large single drop. The ratio of total surface energy before and after the change is

A
2 : 1
B
1 : 1
C
1 : 4
D
1 : 8
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