Q. In a particular year, the Parliament had 20 sessions. If each session lasted for an average of 10 days, how many total days did the Parliament meet that year?
A.200
B.180
C.220
D.240
Solution
Total days = 20 sessions * 10 days/session = 200 days.
Q. In a photoelectric experiment, if the frequency of light is just above the threshold frequency, what can be said about the emitted electrons?
A.They have maximum kinetic energy
B.They are emitted with zero kinetic energy
C.They are emitted with high kinetic energy
D.No electrons are emitted
Solution
If the frequency of light is just above the threshold frequency, the emitted electrons will have zero kinetic energy, as all the energy is used to overcome the work function.
Correct Answer: B — They are emitted with zero kinetic energy
Q. In a photoelectric experiment, if the stopping potential is increased, what happens to the maximum kinetic energy of the emitted electrons?
A.It increases
B.It decreases
C.It remains the same
D.It becomes zero
Solution
Increasing the stopping potential increases the maximum kinetic energy of the emitted electrons, as the stopping potential is directly related to the kinetic energy of the electrons.
Q. In a physics experiment, the force applied is measured as 50 N with an uncertainty of ±1 N. What is the relative uncertainty in the force measurement?
Q. In a physics experiment, the speed of an object is measured as 20.0 m/s with an uncertainty of ±0.4 m/s. What is the maximum possible error in the kinetic energy calculated from this speed?
A.8 J
B.4 J
C.2 J
D.1 J
Solution
Kinetic energy = 0.5 * m * v²; maximum error = m * v * uncertainty in v = m * 20.0 * 0.4 = 8 J (assuming m = 1 kg).
Q. In a pie chart depicting the market share of four companies, Company A has 25%, Company B has 35%, Company C has 20%, and Company D has 20%. Which company has the least market share?
A.Company A
B.Company B
C.Company C
D.Company D
Solution
Company A has the least market share at 25% compared to the others.
Q. In a pie chart depicting the preferences of students for different sports, if 10% prefer basketball, 20% prefer football, and 30% prefer cricket, what percentage of students prefer other sports?
A.40%
B.50%
C.60%
D.70%
Solution
The percentage of students preferring other sports is 100% - (10% + 20% + 30%) = 40%.
Q. In a pie chart representing the market share of four companies, Company A has 25%, Company B has 35%, Company C has 20%, and Company D has 20%. If Company B increases its market share by 5%, what will be the new percentage of Company B?
A.30%
B.35%
C.40%
D.45%
Solution
Company B's new market share will be 35% + 5% = 40%.
Q. In a pie chart representing the market share of four companies, Company A has 25%, Company B has 35%, Company C has 20%, and Company D has 20%. Which company has the highest market share?
Q. In a pie chart representing the sales of four products A, B, C, and D, if the angle for product A is 90 degrees, what percentage of total sales does it represent? (2023)
A.25%
B.50%
C.75%
D.10%
Solution
A full circle is 360 degrees. Therefore, (90/360) * 100 = 25%.
Q. In a pie chart showing the distribution of a company's expenses, if 15% is spent on marketing and 25% on salaries, what percentage is spent on other expenses?
A.60%
B.50%
C.70%
D.40%
Solution
The total percentage spent on marketing and salaries is 15% + 25% = 40%. Therefore, the percentage spent on other expenses is 100% - 40% = 60%.
Q. In a pie chart showing the preferences of students for different sports, if 50% prefer football, 30% prefer basketball, and the rest prefer tennis and cricket equally, what percentage of students prefer tennis?
A.10%
B.15%
C.20%
D.5%
Solution
If 50% prefer football and 30% prefer basketball, that totals 80%. The remaining 20% is split equally between tennis and cricket, so 20% / 2 = 10% prefer tennis.
Q. In a pie chart, if the segment for 'Transportation' is 25% and 'Housing' is 35%, what is the combined percentage for 'Food' and 'Entertainment' if they make up the rest?
A.40%
B.50%
C.60%
D.70%
Solution
The combined percentage for 'Food' and 'Entertainment' is 100% - (25% + 35%) = 40%.
Q. In a pie chart, if the segment representing 'Others' is 10% and the remaining segments are equally divided among three categories, what is the percentage of each of those categories?
A.30%
B.25%
C.20%
D.15%
Solution
The remaining percentage is 100% - 10% = 90%. Divided equally among three categories, each gets 90% / 3 = 30%.
