Major Competitive Exams

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Q. A simple harmonic oscillator has an amplitude of 5 cm. What is the maximum displacement from the mean position?
  • A. 0 cm
  • B. 2.5 cm
  • C. 5 cm
  • D. 10 cm
Q. A simple pendulum completes 20 oscillations in 40 seconds. What is its time period? (2021)
  • A. 1 s
  • B. 2 s
  • C. 0.5 s
  • D. 0.25 s
Q. A simple pendulum has a length of 1 m. What is its time period? (2023)
  • A. 1.0 s
  • B. 2.0 s
  • C. 0.5 s
  • D. 0.25 s
Q. A simple pendulum oscillates with a period of 2 seconds. What is the length of the pendulum? (2021)
  • A. 0.5 m
  • B. 1 m
  • C. 2 m
  • D. 4 m
Q. A small insect can walk on the surface of water due to which of the following phenomena?
  • A. Viscosity
  • B. Surface tension
  • C. Capillarity
  • D. Buoyancy
Q. A small insect can walk on the surface of water due to which property?
  • A. Viscosity
  • B. Surface tension
  • C. Capillarity
  • D. Density
Q. A small insect can walk on the surface of water without sinking. This is primarily due to:
  • A. Buoyancy
  • B. Surface tension
  • C. Viscosity
  • D. Density
Q. A snack contains 150 calories, with 10% from protein, 50% from carbohydrates, and 40% from fats. How many calories are from fats?
  • A. 40 calories
  • B. 50 calories
  • C. 60 calories
  • D. 70 calories
Q. A snack contains 150 calories, with 60% from carbohydrates, 20% from protein, and 20% from fat. How many calories come from fat?
  • A. 20 calories
  • B. 30 calories
  • C. 40 calories
  • D. 50 calories
Q. A snack contains 250 calories, with 40% from carbohydrates, 30% from fats, and 30% from proteins. How many calories come from carbohydrates? (2022)
  • A. 80 calories
  • B. 90 calories
  • C. 100 calories
  • D. 110 calories
Q. A soap bubble has a radius of 0.1 m. What is the surface area of the bubble?
  • A. 0.04 m²
  • B. 0.12 m²
  • C. 0.25 m²
  • D. 0.31 m²
Q. A soap bubble has a radius of 5 cm. What is the surface area of the bubble?
  • A. 100π cm²
  • B. 50π cm²
  • C. 25π cm²
  • D. 20π cm²
Q. A soap solution is added to water. What happens to the surface tension?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. A soap solution is added to water. What is the effect on the surface tension?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes negative
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of clay in the sample? (2022)
  • A. 30%
  • B. 40%
  • C. 50%
  • D. 20%
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of silt in the sample? (2023)
  • A. 30%
  • B. 40%
  • C. 50%
  • D. 20%
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of silt in the soil?
  • A. 30%
  • B. 40%
  • C. 50%
  • D. 20%
Q. A soil sample has a moisture content of 20%. If the dry weight of the soil is 80 kg, what is the weight of the water in the sample?
  • A. 20 kg
  • B. 16 kg
  • C. 24 kg
  • D. 32 kg
Q. A soldier can run 100 meters in 12 seconds. What is his speed in km/h? (2019)
  • A. 18 km/h
  • B. 20 km/h
  • C. 25 km/h
  • D. 30 km/h
Q. A soldier runs 12 km in 1 hour and 15 minutes. What is his speed in km/h? (2023)
  • A. 8 km/h
  • B. 9 km/h
  • C. 10 km/h
  • D. 11 km/h
Q. A soldier runs 12 km in 1 hour and 30 minutes. What is his average speed in km/h? (2023)
  • A. 7.5 km/h
  • B. 8 km/h
  • C. 8.5 km/h
  • D. 9 km/h
Q. A soldier runs 5 km in 30 minutes. What is his speed in km/h? (2019)
  • A. 8 km/h
  • B. 10 km/h
  • C. 12 km/h
  • D. 15 km/h
Q. A soldier runs a distance of 400 meters in 50 seconds. What is his average speed in m/s? (2022)
  • A. 6 m/s
  • B. 7 m/s
  • C. 8 m/s
  • D. 9 m/s
Q. A solenoid has a length of 1 m and a cross-sectional area of 0.01 m². If the magnetic field inside it is 0.4 T, what is the magnetic flux?
  • A. 0.004 Wb
  • B. 0.04 Wb
  • C. 0.4 Wb
  • D. 0.1 Wb
Q. A solenoid has a length of 1 m and a cross-sectional area of 0.01 m². If the magnetic field inside it is 0.2 T, what is the magnetic flux?
  • A. 0.002 Wb
  • B. 0.01 Wb
  • C. 0.02 Wb
  • D. 0.1 Wb
Q. A solenoid has a length of 1 m and a cross-sectional area of 0.01 m². If the magnetic field inside the solenoid is 0.2 T, what is the magnetic flux through one turn of the solenoid?
  • A. 0.002 Wb
  • B. 0.01 Wb
  • C. 0.02 Wb
  • D. 0.1 Wb
Q. A solenoid of length L and cross-sectional area A carries a current I. What is the magnetic field inside the solenoid?
  • A. μ₀nI
  • B. μ₀I/n
  • C. μ₀I/(nA)
  • D. μ₀I/(2n)
Q. A solenoid produces a magnetic field similar to that of a bar magnet. What is the primary factor that determines the strength of the magnetic field in a solenoid? (2021)
  • A. Length of the solenoid
  • B. Number of turns per unit length
  • C. Material of the solenoid
  • D. Current flowing through the solenoid
Q. A solenoid produces a magnetic field similar to that of a bar magnet. What is the main factor that affects the strength of the magnetic field in a solenoid? (2021)
  • A. Length of the solenoid
  • B. Number of turns per unit length
  • C. Material of the solenoid
  • D. Current flowing through the solenoid
Q. A solenoid produces a magnetic field when an electric current passes through it. What happens to the magnetic field if the current is reversed?
  • A. The magnetic field disappears
  • B. The magnetic field direction reverses
  • C. The magnetic field strength increases
  • D. The magnetic field strength decreases
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