Discussion
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- Question
Water has maximum density at............
Options- A. 0 C
- B. -15 C
- C. 4 C
- D. 15 C
- Correct Answer
- 4 C
- 1. When light enters from air to water, then its
Options- A. frequency increases and speed decreases
- B. frequency is same but the wavelength is smaller in water than in air
- C. frequency is same but the wavelength is larger in water than in air
- D. frequency and speed both decreases Discuss
- 2. When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is
Options- A. the violet ray
- B. the red ray
- C. the green ray
- D. the blue ray Discuss
- 3. If a body weighs 12N on the surface of the earth, how much will it weigh on the surface of the moon where acceleration due to gravity is only one-sixth of that on earth's surface?
Options- A. 12N
- B. 2N
- C. 10N
- D. 6N Discuss
- 4. An object with a constant speed
Options- A. is not accelerated
- B. might be accelerated
- C. is always accelerated
- D. also has a constant velocity Discuss
- 5. Which is the point from where an azimuth originates?
Options- A. South
- B. North
- C. East
- D. West Discuss
- 6. In the electrical circuit of a house, the fuse acts as
Options- A. a load
- B. a thermopile
- C. a safety device
- D. a step down device Discuss
- 7. Which of the following is a Heterogeneous Mixture?
Options- A. Air
- B. Table salt
- C. Soda
- D. Brass Discuss
- 8. An object that has kinetic energy must be
Options- A. At an elevated position
- B. Falling
- C. At rest
- D. Moving Discuss
- 9. Lens is made up of which glass
Options- A. Ordinary glass
- B. Pyrex glass
- C. Flint glass
- D. Cobalt glass Discuss
- 10. What is the difference between Thermal Energy and Heat Energy? Discuss
Physics problems
Search Results
Correct Answer: frequency is same but the wavelength is smaller in water than in air
Correct Answer: the red ray
Explanation:
Red is deviated the least and violet the most
Correct Answer: 2N
Explanation:
Weight is mass x g. Since mass is constant and g is only of that on the earth. The weight on the moon is only of that on the earth.
Therefore 2N i.e (b) is the answer.
Correct Answer: might be accelerated
Correct Answer: North
Explanation:
The azimuth originates at true North i.e, the azimuth originates from the north point. It is a measure of how far an object forms the observer's north point.
Azimuth is a technical mapping term which is used to describe the direction of an angle between north and south on a compass circle through which the circle line passes. It is the most common military method to express direction. When using an azimuth, the point from which the azimuth originates is the center of an imaginary circle.
Correct Answer: a safety device
Correct Answer: Soda
Explanation:
Here Soda is a Heterogenous Mixture.
A Heterogeneous Mixture is a mixture having a non-uniform composition i.e, the mixture contains components in different phases. Using various means, the parts in the mixture can be separated from one another.
Correct Answer: Moving
Explanation:
In physics, we know that the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Hence, An object that has kinetic energy must be in motion i.e, moving.
Correct Answer: Flint glass
Correct Answer: Energy tranfer takes place either by means of Heat or Work only in Thermodynamics Heat :: Heat Energy is defined as Energy that can be transferred due to temperature change Whereas Thermal Energy :: Thermal Energy is the Internal Energy stored in the system maintained at a certain Temperature
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