Major Competitive Exams
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Q. A political party has 150 seats in the parliament. If they lose 20% of their seats in the next election, how many seats will they have left? (2020)
Q. A potentiometer is used to compare two emf sources. If the first source gives a balance length of 60cm and the second gives 90cm, what is the ratio of their emfs?
Q. A potentiometer is used to compare two EMFs. If the known EMF is 6V and the length of the wire is 120 cm, what is the potential gradient if the length of the wire is used to balance an unknown EMF of 4V?
Q. A potentiometer wire has a length of 10 m and a potential difference of 5 V across it. What is the potential gradient?
Q. A potentiometer wire has a resistance of 10 ohms and is connected to a 5 V battery. What is the current flowing through the wire?
Q. A potentiometer wire has a uniform cross-section and a length of 10 m. If a potential difference of 5 V is applied, what is the potential gradient?
Q. A potentiometer wire has a uniform cross-section and a potential difference of 12V across it. If the length of the wire is 6m, what is the potential gradient?
Q. A potentiometer wire has a uniform cross-section and a total length of 10 m. If a potential difference of 5 V is applied across it, what is the potential gradient?
Q. A potentiometer wire is made of constantan. What is the advantage of using this material?
Q. A prize of $1200 is to be distributed among three winners in the ratio 2:3:5. How much will the winner with the highest share receive? (2020)
Q. A prize of $1500 is to be divided among three students in the ratio 2:3:5. How much does the student with the largest share receive?
Q. A prize of $1500 is to be divided among three students in the ratio 2:3:5. How much will the student with the largest share receive?
Q. A prize of $3000 is to be divided among 3 winners in the ratio 2:3:5. How much does the second winner receive? (2019)
Q. A prize of $3000 is to be divided among 3 winners in the ratio 2:3:5. How much does the winner with the largest share receive? (2019)
Q. A product is bought for $120 and sold for $144. What is the profit percentage?
Q. A product is bought for $200 and sold for $240. What is the profit percentage?
Q. A product is bought for $500 and sold for $450. What is the loss percentage? (2023)
Q. A product is marked at $250 and sold for $200. What is the discount percentage?
Q. A product is marked at $250 and sold for $200. What is the percentage discount offered? (2023)
Q. A product is marked at $600 and sold at a loss of 10%. What is the selling price?
Q. A product is sold at a loss of 25%. If the selling price is $75, what was the cost price?
Q. A product is sold at a profit of 25%. If the selling price is $250, what was the cost price?
Q. A product is sold at a profit of 30%. If the selling price is $130, what was the cost price?
Q. A product is sold for $240 after a discount of 20%. What was the original price?
Q. A product is sold for $300 after a discount of 25%. What was the original price of the product? (2023)
Q. A product is sold for $300 after a discount of 30%. What was the original price?
Q. A product's price increased from $150 to $180. What is the percentage increase in the price?
Q. A product's price is increased by 15% and then decreased by 15%. What is the net effect on the price?
Q. A projectile is launched at an angle of 30 degrees with an initial speed of 20 m/s. What is the maximum height reached by the projectile?
Q. A projectile is launched at an angle of 30 degrees with an initial speed of 20 m/s. What is the maximum height it reaches? (2022)
