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Class 12 11 10 CUET Notes CBSE

@Class_12_11_10_CUET_Notes_CBSE
Kanal geosi va tili: Butun dunyo, Inglizcha
Toifa: Ta’lim

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Class 12 11 10 CUET Notes CBSE

30 Nov, 13:58

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Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
A body dropped from a height h with initial velocity zero, strikes the ground with a velocity 3 m/s. Another body of same mass dropped from the same height h with an initial velocity of 4 m/s. Final velocity of second mass, with which it strikes ground is
So‘rovnoma
  •   5 m/s
  •   12 m/s
  •   3 m/s
  •   4 m/s
210 ta ovoz
2.6k 0 2 7
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s, it covers a distance of
So‘rovnoma
  •   1440 m
  •   2980 m
  •   20 m
  •   400 m
148 ta ovoz
2.3k 0 2 3
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
A car moving with a speed of 40 km/h can be stopped by applying brakes after atleast 2 m. If the same car is moving with a speed of 80 km/h, what is the minimum stopping distance?
So‘rovnoma
  •   4 m
  •   6 m
  •   8 m
  •   2 m
110 ta ovoz
1.9k 0 0 3
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
A particle is thrown vertically upward. Its velocity at half of the height is 10 m/s, then the maximum height attained by it (g= 10 m/s)
So‘rovnoma
  •   8 m
  •   20 m
  •   10 m
  •   16 m
97 ta ovoz
1.5k 0 0
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. average speed of the particle during this motion is
So‘rovnoma
  •   4.0 m/s
  •   5.0 m/s
  •   5.5 m/s
  •   4.8 m/s
87 ta ovoz
1.3k 0 1
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
If the initial temperatures of metallic sphere and disc, of the sam mass, radius and nature are equal, then the ratio of their rate of cooling in same environment will be
So‘rovnoma
  •   1:4
  •   4:1
  •   1:2
  •   2:1
79 ta ovoz
1.1k 0 0
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
At 127 C radiates energy is 2.7 X 10J/s At what temperature radiated energy is 4.32 X 10 J/s
So‘rovnoma
  •   400 K
  •   4000 K
  •   80000 K
  •   40000 K
82 ta ovoz
1.3k 0 0
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
If the temperature of the sun were to be increased from T to 2T and its radius from R to 2R, then the ratio of the radiant energy received on the earth to what it was previously will be
So‘rovnoma
  •   4
  •   16
  •   32
  •   64
79 ta ovoz
1.3k 0 0
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
Suppose the sun expands so that its radius becomes 100 times its present radius and its surface temperature becomes half of its present value. The total energy emitted by it then will increase by factor of
So‘rovnoma
  •   10
  •   625
  •   256
  •   16
78 ta ovoz
1.2k 0 0
Class 12 11 10 CUET Notes CBSE

13 Nov, 16:48

Telegram'da ochish Ulashish Shikoyat qilish
Star A has radius r surface temperature T While star B has radius 4r and surface temperature T/2. The ratio of the power of two starts, P:P, is
So‘rovnoma
  •   16 :1
  •   1:16
  •   1:1
  •   1:4
92 ta ovoz
1.2k 0 0 1
Class 12 11 10 CUET Notes CBSE

24 Oct, 15:23

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Class 12 11 10 CUET Notes CBSE

17 Oct, 18:59

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4.8k 0 6 5
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
In a p-type semiconductor, the majority charge carriers are:
So‘rovnoma
  •   Electrons
  •   Holes
  •   Protons
  •   Neutrons
489 ta ovoz
5.3k 0 3 8
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
Which of the following statements about the energy band gap of a semiconductor is correct?
So‘rovnoma
  •   It is the energy difference between the valence band and the conduction band.
  •   It is the energy difference between two energy levels within the valence band.
  •   It is the energy difference between two energy levels within the conduction band.
  •   It is the energy of the electrons in the valence band.
269 ta ovoz
5.1k 0 4 1
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
In a semiconductor, an increase in temperature will:
So‘rovnoma
  •   Decrease the conductivity
  •   Increase the conductivity
  •   Have no effect on conductivity
  •   Increase the resistance
302 ta ovoz
4.5k 0 4 1
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
A system of particles is in equilibrium. What is the condition for the net external torque acting on the system?
So‘rovnoma
  •   Must be zero
  •   Must be constant
  •   Must be maximum
  •   Must be minimum
253 ta ovoz
4.2k 0 2 1
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
In a system of particles, if the net external force acting on the system is zero, what can be said about its linear momentum?
So‘rovnoma
  •   Must be zero
  •   Must be constant
  •   Must be maximum
  •   Must be minimum
236 ta ovoz
3.3k 0 2
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
What is the angular momentum of a system of particles conserved with respect to?
So‘rovnoma
  •   Net external torque
  •   Net external force
  •   Total energy
  •   Linear momentum
212 ta ovoz
3.2k 0 2 1
Class 12 11 10 CUET Notes CBSE

4 Oct, 15:51

Telegram'da ochish Ulashish Shikoyat qilish
If a system of particles is isolated and experiences no external torque, what can be concluded about its angular momentum?
So‘rovnoma
  •   It must be zero
  •   It must be constant
  •   It must be maximum
  •   It must be minimum
178 ta ovoz
3.1k 0 2 1
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