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Question 111

Railway GDCE 2019• Part B

Value of sin 16°/cos 74° 

  1. AOption (a)

    1

  2. BOption (b)

    60

  3. COption (c)

    √2 

  4. DOption (d)

    1/√2 

View answer & explanation

Correct answer

Answer: (a)A.

1

Explanation not yet available.

Question 112

Railway GDCE 2019• Part B

______ was the first to use a glass prism to obtain the spectrum of sunlight

  1. AOption (a)

    C.V. Raman

  2. BOption (b)

    John Dalton

  3. COption (c)

    Henry Cavendish

  4. DOption (d)

    Issac Newton

View answer & explanation

Correct answer

Answer: (a)A.

C.V. Raman

Explanation not yet available.

Question 113

Railway GDCE 2019• Part B

The roots of the quadratic equation 3x2 + 7x + 4 = 0 are

  1. AOption (a)

    -1, -4/3

  2. BOption (b)

    1, 4/3

  3. COption (c)

    -1, 4/3

  4. DOption (d)

    1, -4/3

View answer & explanation

Correct answer

Answer: (a)A.

-1, -4/3

Explanation not yet available.

Question 114

Railway GDCE 2019• Part B

In a triangle ΔABC, AB = 39 cm, BC = 80 cm, and AC = 89 cm then the triangle will be 

  1. AOption (a)

    acute angled

  2. BOption (b)

    impossible

  3. COption (c)

    obtuse angled

  4. DOption (d)

    right angled

View answer & explanation

Correct answer

Answer: (a)A.

acute angled

Explanation not yet available.

Question 115

Railway GDCE 2019• Part B

An electric heater is used on a 220V supply and it takes a current of 2A. How much power does it consume?

  1. AOption (a)

    550 W

  2. BOption (b)

    440 W

  3. COption (c)

    400 W

  4. DOption (d)

    450 W

View answer & explanation

Correct answer

Answer: (a)A.

550 W

Explanation not yet available.

Question 116

Railway GDCE 2019• Part B

A car accelerates uniformly from 5 ms-1 to 10 ms-1 in five seconds. Find the acceleration of the car

  1. AOption (a)

    1 ms2

  2. BOption (b)

    1 ms-2

  3. COption (c)

    1 ms1

  4. DOption (d)

    1 ms-1

View answer & explanation

Correct answer

Answer: (a)A.

1 ms2

Explanation not yet available.

Question 117

Railway GDCE 2019• Part B

A ray of light meets a plane mirror at an angle of incidence 15°. What will be the deviation of the ray after reflection? 

  1. AOption (a)

    150° 

  2. BOption (b)

    120° 

  3. COption (c)

    30° 

  4. DOption (d)

    60° 

View answer & explanation

Correct answer

Answer: (a)A.

150° 

Explanation not yet available.

Question 118

Railway GDCE 2019• Part B

The fuel used in nuclear power plants is

  1. AOption (a)

    U - 235

  2. BOption (b)

    Enriched U - 235

  3. COption (c)

    U - 236

  4. DOption (d)

    U - 238

View answer & explanation

Correct answer

Answer: (a)A.

U - 235

Explanation not yet available.

Question 119

Railway GDCE 2019• Part B

For which value of k; the series 2, 3 + k and 6 are in A.P.?

  1. AOption (a)

    4

  2. BOption (b)

    3

  3. COption (c)

    1

  4. DOption (d)

    2

View answer & explanation

Correct answer

Answer: (a)A.

4

Explanation not yet available.

Question 120

Railway GDCE 2019• Part B

A current of 2 A flows through a 24 V car head light bulb for 5 mins. How much energy transfer occurs during this time?

  1. AOption (a)

    14400 joule

  2. BOption (b)

    10800 joule

  3. COption (c)

    4200 joule

  4. DOption (d)

    43200 joule

View answer & explanation

Correct answer

Answer: (a)A.

14400 joule

Explanation not yet available.
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