1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A body is projected vertically upwards. The times corresponding to height $$h$$, while ascending and while descending are $$t_1$$ and $$t _2$$ , respectively. Then, the velocity of projection is ($$g$$ is acceleration due to gravity)

A
$${{g\sqrt {{t_1}{t_2}} } \over 2}$$
B
$${{g({t_1} + {t_2})} \over 2}$$
C
$$g\sqrt {{t_1}{t_2}} $$
D
$${{g{t_1}{t_2}} \over {{t_1} + {t_2}}}$$
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point

COMEDK 2020 Physics - Motion Question 9 English

A
D
B
A
C
B
D
C
3
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A fluid is in streamline flow across a horizontal pipe of variable area of cross-section. For this which of the following statements is correct?

A
Velocity of fluid is maximum at narrowest part.
B
Pressure of the fluid is maximum at widest part.
C
Both (a) and (b)
D
Neither (a) nor (b)
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

Two capacitors $$C_1$$ and $$C_2$$ are charged to 120 V and 200 V, respectively. When they are connected in parallel, it is found that potential on each one of them is zero. Therefore,

A
$$5C_1=3C_2$$
B
$$3C_1=5C_2$$
C
$$3C_1+5C_2=0$$
D
$$9C_1=4C_2$$
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