Physics problems
- 1. Weight of a body is maximum at the:
Options- A. Equator
- B. Pole
- C. Subtropics
- D. Tropics Also asked in: AIEEE, Bank Exams, CAT
Correct Answer: Pole
- 2. Which of the following device is best suited for measuring the temperature inside metallurgical furnaces?
Options- A. Pyrometer
- B. Thermocouple
- C. Thermometer
- D. Thermistor Also asked in: AIEEE, Bank Exams, CAT
Correct Answer: Pyrometer
- 3. When body is accelerated--
Options- A. Its velocity never changes.
- B. Its speed will always change.
- C. Its direction always changes.
- D. Its speed may or may not change. Also asked in: Bank Exams
Correct Answer: Its speed may or may not change.
Explanation:
Uniform circular motion, that is constant speed along a circular path, is an example of a body experiencing acceleration resulting in velocity of a constant magnitude but the change of direction
- 4. The spring constant of a spring depends on its
Options- A. length only
- B. material only
- C. length and its diameter
- D. thickness, its diameter and its material Also asked in: Bank Exams
Correct Answer: thickness, its diameter and its material
Explanation:
In dealing with a coil spring the spring constant will depend on the stiffness of the spring material, the thicknessof the wire from which the spring is wound and, diameterof the turns of the coil, the number of turns per unit length and the overall length of the spring.
- 5. Which of the following is not a vector quantity?
Options- A. Acceleration
- B. Electric current
- C. Force
- D. Velocity Also asked in: Bank Exams
Correct Answer: Electric current
- 6. Which of the following represents a relation for ?heat lost = heat gained??
Options- A. Principle of thermal equilibrium
- B. Principle of colors
- C. Principle of calorimetry
- D. Principle of vaporization Also asked in: Bank Exams
Correct Answer: Principle of calorimetry
Explanation:
Heat lost by hot object = Heat gained by cold object
where we ignore heat gained or lost from/to the surroundings.
The study of heat gained and lost in this manner is often called Calorimetry.
- 7. The reverse effect of X-ray emission is
Options- A. Raman effect
- B. Compton effect
- C. Zeeman effect
- D. Photo-electric effect Also asked in: Bank Exams
Correct Answer: Photo-electric effect
- 8. Convex mirror is generally used in _____.
Options- A. solar cookers
- B. opthalmoscope
- C. reflector for head light
- D. rear view mirror Also asked in: Bank Exams
Correct Answer: rear view mirror
- 9. What is the SI unit of frequency?
Options- A. Newton
- B. Watt
- C. Farad
- D. Hertz Also asked in: Bank Exams
Correct Answer: Hertz
- 10. What is the SI unit of electric current?
Options- A. Newton
- B. Joule
- C. Ampere
- D. Watt Also asked in: Bank Exams
Correct Answer: Ampere
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