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Manoj Rao Chatterjee

Asked: 3 years agoIn: Physics

तांबा
अल्युमीनियम
लीड
टंगस्टन

Peter Lal Padmanabhan

Asked: 3 years agoIn: Physics

The quantisation of charge was first suggested by ________________
1. Michael Faraday
2. Sir Issac Newton
3. Rutherford
4. Max Planck

Nalini Dyal

Asked: 3 years agoIn: Physics

The velocity of sound in air (under normal condition) is
1. 344 m/sec
2. 3320 m/sec
3. 30 m/sec
4. 3200 m/sec

Vivek Dev Mann

Asked: 3 years agoIn: Physics

The least count of the main scale of a screw gauge is 1 mm. The minimum number of divisions on its circular scale required to measure 5 μm diameter of a wire is
1. 50
2. 200
3. 500
4. 100

Chinmay Chandra Chana

Asked: 3 years agoIn: Physics

An electron has a mass of 9.1 × 10^-31 kg. It revolves round the nucleus in a circular orbit of radius 0.529 × 10^-10 metre at a speed of 2.2 × 10⁶ m/s. The magnitude of its linear momentum in this motion is
1. 1.1 × 10^-34 kg – m/s
2. 2.0 × 10^-24 kg – m/s
3. 4.0 × 10^-24 kg – m/s
4. 4.0 × 10^-31 kg – m/s

Pranab Hari Dhar

Asked: 3 years agoIn: Physics

A travelling harmonic wave is represented by the equation y(x, t) = 10^-3 sin (50t + 2x), where ‘x’ and ‘y’ are in metre and ‘t’ is in second. Which of the following is a correct statement about the wave?
1. The wave is propagating along the negative X-axis with speed 25 m/s.
2. The wave is propagating along the positive X-axis with speed 25 m/s.
3. The wave is propagating along the positive X-axis with speed 100 m/s.
4. The wave is propagating along the negative X-axis with speed 100 m/s.

Yadu Mistry

Asked: 3 years agoIn: Physics

Using a nuclear counter, the count rate of emitted particles from a radioactive source is measured. At t = 0, it was 1600 counts per second and t = 8 s, it was 100 counts per second. The count rate observed as counts per second at t = 6s is close to
1. 400
2. 200
3. 150
4. 360

Zaad Raj Parikh

Asked: 3 years agoIn: Physics

(A). Latent heat
(B). Nuclear fusion
(C). Refractive index
(D). Stock value

Habib Iqbal Wason

Asked: 3 years agoIn: Physics

Which of the following was the first working laser?
1. Disk laser
2. Ruby laser
3. Carbon dioxide laser
4. Argon – ion laser

Parvez Bhai Pall

Asked: 3 years agoIn: Physics

A train moves towards a stationary observer with speed 34 m/s. The train sounds a whistle and its frequency registered by the observer is f₁. If the speed of the train is reduced to 17 m/s, the frequency registered is f₂. If speed of sound is 340 m/s, then the ratio \(\frac{{{f_1}}}{{{f_2}}}\) is
1. \(\frac{{19}}{{18}}\)
2. \(\frac{{21}}{{20}}\)
3. \(\frac{{20}}{{19}}\)
4. \(\frac{{18}}{{17}}\)

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अल्युमीनियम
लीड
टंगस्टन

तांबा

अल्युमीनियम

लीड

टंगस्टन

The quantisation of charge was first suggested by ________________
1. Michael Faraday
2. Sir Issac Newton
3. Rutherford
4. Max Planck

The velocity of sound in air (under normal condition) is
1. 344 m/sec
2. 3320 m/sec
3. 30 m/sec
4. 3200 m/sec

The least count of the main scale of a screw gauge is 1 mm. The minimum number of divisions on its circular scale required to measure 5 μm diameter of a wire is
1. 50
2. 200
3. 500
4. 100

Using a nuclear counter, the count rate of emitted particles from a radioactive source is measured. At t = 0, it was 1600 counts per second and t = 8 s, it was 100 counts per second. The count rate observed as counts per second at t = 6s is close to
1. 400
2. 200
3. 150
4. 360

(A). Latent heat
(B). Nuclear fusion
(C). Refractive index
(D). Stock value

(A). Latent heat

(B). Nuclear fusion

(C). Refractive index

(D). Stock value

Which of the following was the first working laser?
1. Disk laser
2. Ruby laser
3. Carbon dioxide laser
4. Argon – ion laser

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लीड

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(A). Latent heat

(B). Nuclear fusion

(C). Refractive index

(D). Stock value

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