Discussion
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- Question
Lens is made up of which glass
Options- A. Ordinary glass
- B. Pyrex glass
- C. Flint glass
- D. Cobalt glass
- Correct Answer
- Flint glass
- 1. An object that has kinetic energy must be
Options- A. At an elevated position
- B. Falling
- C. At rest
- D. Moving Discuss
- 2. Which of the following is a Heterogeneous Mixture?
Options- A. Air
- B. Table salt
- C. Soda
- D. Brass Discuss
- 3. 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
- 4. Water has maximum density at............
Options- A. 0 C
- B. -15 C
- C. 4 C
- D. 15 C Discuss
- 5. 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
- 6. What is the difference between Thermal Energy and Heat Energy? Discuss
- 7. Is B2+ Paramagnetic or Diamagnetic? Discuss
- 8. Electrical Pressure is also called
Options- A. Current
- B. Voltage
- C. Resistance
- D. Power Discuss
- 9. Friction can be reduced by changing from
Options- A. Static to Dynamic
- B. Rolling to Sliding
- C. Dynamic to Static
- D. Sliding to Rolling Discuss
- 10. Which metal is the best conductor of heat?
Options- A. Silver
- B. Gold
- C. Copper
- D. All of the above Discuss
Physics problems
Search Results
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: 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: a safety device
Correct Answer: 4 C
Correct Answer: frequency is same but the wavelength is smaller in water than in air
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
Correct Answer: Voltage
Explanation:
Electrical Pressure is also called as Voltage. Voltage is measured in Volts.
Volt : A unit of electrical pressure or Voltage is called Volt.
One volt is the amount of pressure required to cause one ampere of current to flow against one ohm of resistance.
Voltage is also referred to as Electromotive Force or Electrical Potential or Electrical Pressure.
Correct Answer: Sliding to Rolling
Explanation:
Any object rolls when there is no friction. So, Sliding to Rolling is correct.
Correct Answer: All of the above
Explanation:
Silver is the best conductor of both heat and electricity among metals with a thermal conduction value of about 430 W/(mK).
Gold and copper both come respectably close to silver.
Copper being significantly less costly it is often chosen over silver in many applications.
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