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- Question
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
- Correct Answer
- a safety device
- 1. Water has maximum density at............
Options- A. 0 C
- B. -15 C
- C. 4 C
- D. 15 C Discuss
- 2. 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
- 3. 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
- 4. 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
- 5. 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
- 6. Which of the following is a Heterogeneous Mixture?
Options- A. Air
- B. Table salt
- C. Soda
- D. Brass Discuss
- 7. An object that has kinetic energy must be
Options- A. At an elevated position
- B. Falling
- C. At rest
- D. Moving Discuss
- 8. Lens is made up of which glass
Options- A. Ordinary glass
- B. Pyrex glass
- C. Flint glass
- D. Cobalt glass Discuss
- 9. What is the difference between Thermal Energy and Heat Energy? Discuss
- 10. Is B2+ Paramagnetic or Diamagnetic? Discuss
Physics problems
Search Results
Correct Answer: 4 C
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: 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
Correct Answer: B2+ is a Paramagnetic The filled orbitals are ?(1s)2 2, ??(1s)2 2, ?(2s)2 2, ??(2s)2 2 The half-filled orbitals are ?(2px x) and ?(2py y) Since it posses 2 unpaired electrons, it is Paramagnetic in nature
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